all vars to a macro. All users updated.

	* grub-core/kern/env.c (grub_env_find): Make static.
	(grub_env_set): Remove useless set.

	* grub-core/hook/datehook.c (grub_datetime_names): Make const.
	(grub_read_hook_datetime): Return const char *.
	* grub-core/kern/env.c (grub_env_get): Return const char *. All users
	updated.
	* grub-core/normal/datetime.c (grub_weekday_names): Make const.
	Mark for gettext.
	(grub_get_weekday_name): Return const char *. Call gettext.
	* grub-core/script/argv.c (grub_script_argv_append): Receive const
	char * and len as the argument. All users updated.
	(grub_script_argv_split_append): Receive const char *.
	* include/grub/datetime.h (grub_get_weekday_name): Update proto.
	* include/grub/env.h (grub_env_get): Likewise.
	(grub_env_read_hook_t): Return const char *.
	* include/grub/script_sh.h (grub_script_argv_append): Update proto.
	(grub_script_argv_split_append): Likewise.

	(set_env_limn_ro): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* grub-core/hook/datehook.c (GRUB_MOD_INIT): Likewise. Change to
	ARRAY_SIZE while on it.
	(GRUB_MOD_FINI): Change to ARRAY_SIZE.
	* grub-core/normal/context.c (grub_env_export): Move from here ...
	* grub-core/kern/env.c (grub_env_export): ... here.
	* grub-core/normal/context.c (grub_cmd_export): Skip exporting root and
	prefix.
	* grub-core/kern/main.c (grub_main): Export root and prefix.
	* include/grub/env.h (grub_env_export): Export.
	Reported by: Seth Goldberg.

	* kern/env.c (grub_env_unset): Set the variable to "" if has hooks.

	* commands/i386/pc/drivemap.c: Remove all trailing whitespace.
	* commands/lspci.c: Likewise.
	* commands/probe.c: Likewise.
	* commands/xnu_uuid.c: Likewise.
	* conf/i386-coreboot.rmk: Likewise.
	* conf/i386-efi.rmk: Likewise.
	* conf/i386-ieee1275.rmk: Likewise.
	* conf/i386-pc.rmk: Likewise.
	* conf/powerpc-ieee1275.rmk: Likewise.
	* conf/sparc64-ieee1275.rmk: Likewise.
	* conf/x86_64-efi.rmk: Likewise.
	* fs/i386/pc/pxe.c: Likewise.
	* gettext/gettext.c: Likewise.
	* include/grub/efi/graphics_output.h: Likewise.
	* include/grub/i386/pc/memory.h: Likewise.
	* kern/env.c: Likewise.
	* kern/i386/qemu/startup.S: Likewise.
	* lib/i386/pc/biosnum.c: Likewise.
	* lib/i386/relocator.c: Likewise.
	* lib/i386/relocator_asm.S: Likewise.
	* lib/relocator.c: Likewise.
	* loader/i386/bsd.c: Likewise.
	* loader/i386/multiboot.c: Likewise.
	* loader/i386/pc/chainloader.c: Likewise.
	* loader/i386/xnu.c: Likewise.
	* loader/xnu.c: Likewise.
	* normal/main.c: Likewise.
	* normal/menu_text.c: Likewise.
	* util/getroot.c: Likewise.
	* util/grub-mkconfig_lib.in: Likewise.
	* util/grub.d/00_header.in: Likewise.
	* util/i386/pc/grub-mkimage.c: Likewise.
	* util/mkisofs/eltorito.c: Likewise.
	* util/mkisofs/exclude.h: Likewise.
	* util/mkisofs/hash.c: Likewise.
	* util/mkisofs/iso9660.h: Likewise.
	* util/mkisofs/joliet.c: Likewise.
	* util/mkisofs/mkisofs.c: Likewise.
	* util/mkisofs/mkisofs.h: Likewise.
	* util/mkisofs/multi.c: Likewise.
	* util/mkisofs/name.c: Likewise.
	* util/mkisofs/rock.c: Likewise.
	* util/mkisofs/tree.c: Likewise.
	* util/mkisofs/write.c: Likewise.
	* video/efi_gop.c: Likewise.

	* kern/env.c (grub_env_context_open): Mark exported variable for
	reexport.

	* kern/env.c (grub_env_export): Create nonexistent variables before
	exporting.

	* kern/mm.c (grub_zalloc): New function.
	(grub_debug_zalloc): Likewise.
	* include/grub/mm.h: Declare grub_zalloc() and
	grub_debug_zalloc().
	* util/misc.c (grub_zalloc): New function.
	* bus/usb/uhci.c (grub_uhci_pci_iter): Use grub_zalloc()
	instead of grub_malloc(), remove unneeded initializations.
	* bus/usb/usbhub.c (grub_usb_hub_add_dev): Likewise.
	* commands/extcmd.c (grub_extcmd_dispatcher): Likewise.
	* commands/parttool.c (grub_cmd_parttool): Likewise.
	* disk/i386/pc/biosdisk.c (grub_biosdisk_open): Likewise.
	* disk/raid5_recover.c (grub_raid5_recover): Likewise.
	* disk/raid6_recover.c (grub_raid6_recover): Likewise.
	* disk/usbms.c (grub_usbms_finddevs): Likewise.
	* efiemu/mm.c (grub_efiemu_request_memalign): Likewise.
	* efiemu/pnvram.c (grub_efiemu_pnvram): Likewise.
	(grub_cmd_efiemu_pnvram): Likewise.
	* fs/i386/pc/pxe.c (grub_pxefs_open): Likewise.
	* fs/iso9660.c (grub_iso9660_mount): Likewise.
	(grub_iso9660_iterate_dir): Likewise.
	* fs/jfs.c (grub_jfs_opendir): Likewise.
	* fs/ntfs.c (list_file): Likewise.
	(grub_ntfs_mount): Likewise.
	* kern/disk.c (grub_disk_open): Likewise.
	* kern/dl.c (grub_dl_load_core): Likewise.
	* kern/elf.c (grub_elf_file): Likewise.
	* kern/env.c (grub_env_context_open): Likewise.
	(grub_env_set): Likewise.
	(grub_env_set_data_slot): Likewise.
	* kern/file.c (grub_file_open): Likewise.
	* kern/fs.c (grub_fs_blocklist_open): Likewise.
	* loader/i386/multiboot.c (grub_module): Likewise.
	* loader/xnu.c (grub_xnu_create_key): Likewise.
	(grub_xnu_create_value): Likewise.
	* normal/main.c (grub_normal_add_menu_entry): Likewise.
	(read_config_file): Likewise.
	* normal/menu_entry.c (make_screen): Likewise.
	* partmap/sun.c (sun_partition_map_iterate): Likewise.
	* script/sh/lexer.c (grub_script_lexer_init): Likewise.
	* script/sh/script.c (grub_script_parse): Likewise.
	* video/bitmap.c (grub_video_bitmap_create): Likewise.
	* video/readers/jpeg.c (grub_video_reader_jpeg): Likewise.
	* video/readers/png.c (grub_png_output_byte): Likewise.
	(grub_video_reader_png): Likewise.

    * kern/env.c (grub_env_context_open): Added an argument to specify
    whether a new context inherits exported variables from current
    one. This is useful when making a sandbox to interpret a config
    file.
    All callers updated.

    * include/grub/env.h (grub_env_context_open): Updated the prototype.

    * kern/env.c (grub_env_context_close): Fix memory leaks.

	* conf/i386-pc.rmk (pkglib_MODULES): Add datetime.mod, date.mod
	and datehook.mod.
	(datetime_mod_SOURCES): New macro.
	(datetime_mod_CFLAGS): Likewise.
	(datetime_mod_LDFLAGS): Likewise.
	(date_mod_SOURCES): Likewise.
	(date_mod_CFLAGS): Likewise.
	(date_mod_LDFLAGS): Likewise.
	(datehook_mod_SOURCES): Likewise.
	(datehook_mod_CFLAGS): Likewise.
	(datehook_mod_LDFLAGS): Likewise.

	* conf/i386-coreboot.rmk (pkglib_MODULES): Add datetime.mod, date.mod
	and datehook.mod.
	(datetime_mod_SOURCES): New macro.
	(datetime_mod_CFLAGS): Likewise.
	(datetime_mod_LDFLAGS): Likewise.
	(date_mod_SOURCES): Likewise.
	(date_mod_CFLAGS): Likewise.
	(date_mod_LDFLAGS): Likewise.
	(datehook_mod_SOURCES): Likewise.
	(datehook_mod_CFLAGS): Likewise.
	(datehook_mod_LDFLAGS): Likewise.

	* conf/i386-ieee1275.rmk (pkglib_MODULES): Add datetime.mod, date.mod
	and datehook.mod.
	(datetime_mod_SOURCES): New macro.
	(datetime_mod_CFLAGS): Likewise.
	(datetime_mod_LDFLAGS): Likewise.
	(date_mod_SOURCES): Likewise.
	(date_mod_CFLAGS): Likewise.
	(date_mod_LDFLAGS): Likewise.
	(datehook_mod_SOURCES): Likewise.
	(datehook_mod_CFLAGS): Likewise.
	(datehook_mod_LDFLAGS): Likewise.

	* conf/i386-efi.rmk (pkglib_MODULES): Add datetime.mod, date.mod
	and datehook.mod.
	(datetime_mod_SOURCES): New macro.
	(datetime_mod_CFLAGS): Likewise.
	(datetime_mod_LDFLAGS): Likewise.
	(date_mod_SOURCES): Likewise.
	(date_mod_CFLAGS): Likewise.
	(date_mod_LDFLAGS): Likewise.
	(datehook_mod_SOURCES): Likewise.
	(datehook_mod_CFLAGS): Likewise.
	(datehook_mod_LDFLAGS): Likewise.

	* conf/x86_64-efi.rmk (pkglib_MODULES): Add datetime.mod, date.mod
	and datehook.mod.
	(datetime_mod_SOURCES): New macro.
	(datetime_mod_CFLAGS): Likewise.
	(datetime_mod_LDFLAGS): Likewise.
	(date_mod_SOURCES): Likewise.
	(date_mod_CFLAGS): Likewise.
	(date_mod_LDFLAGS): Likewise.
	(datehook_mod_SOURCES): Likewise.
	(datehook_mod_CFLAGS): Likewise.
	(datehook_mod_LDFLAGS): Likewise.

	* kern/env.c (grub_env_insert): Fix a bug in prevp pointer.

	* commands/date.c: New file.

	* hook/datehook.c: Likewise.

	* include/grub/lib/datetime.h: Likewise.

	* include/grub/i386/cmos.h: Likewise.

	* lib/datetime.c: Likewise.

	* lib/i386/datetime.c: Likewise.

	* lib/efi/datetime.c: Likewise.

	* kern/env.c (grub_register_variable_hook): Don't copy empty
	string, it leaks memory.  Pass "" to grub_env_set(), it should
	handle constant strings.

        * kern/misc.c (grub_strncat): Fix off-by-one error.
        Reported by Zhang Huan <zhanghuan@nrchpc.ac.cn>

        * kern/env.c (grub_env_context_close): Clear current context, not
        previous one.
        Patch from Zhang Huan <zhanghuan@nrchpc.ac.cn>

        * kern/misc.c (grub_strcat): Minor speed optimization (same code size).

        * kern/env.c (grub_env_context_open): Propagate hooks for global
        variables to new context.

        * kern/main.c (grub_set_root_dev): Export `root' variable.

    Migrate to GNU General Public License Version 3.

    * COPYING: Replaced with the plain text version of GPLv3.

    * config.guess: Updated from gnulib.
    * config.sub: Likewise.

    * geninit.sh: Output a GPLv3 copyright notice.
    * geninitheader.sh: Likewise.
    * genmodsrc.sh: Likewise.
    * gensymlist.sh.in: Likewise.

    * boot/i386/pc/boot.S: Upgraded to GPLv3.
    * boot/i386/pc/diskboot.S: Likewise.
    * boot/i386/pc/pxeboot.S: Likewise.
    * commands/blocklist.c: Likewise.
    * commands/boot.c: Likewise.
    * commands/cat.c: Likewise.
    * commands/cmp.c: Likewise.
    * commands/configfile.c: Likewise.
    * commands/echo.c: Likewise.
    * commands/help.c: Likewise.
    * commands/ls.c: Likewise.
    * commands/search.c: Likewise.
    * commands/terminal.c: Likewise.
    * commands/test.c: Likewise.
    * commands/videotest.c: Likewise.
    * commands/i386/cpuid.c: Likewise.
    * commands/i386/pc/halt.c: Likewise.
    * commands/i386/pc/play.c: Likewise.
    * commands/i386/pc/reboot.c: Likewise.
    * commands/i386/pc/vbeinfo.c: Likewise.
    * commands/i386/pc/vbetest.c: Likewise.
    * commands/ieee1275/halt.c: Likewise.
    * commands/ieee1275/reboot.c: Likewise.
    * commands/ieee1275/suspend.c: Likewise.
    * disk/loopback.c: Likewise.
    * disk/lvm.c: Likewise.
    * disk/raid.c: Likewise.
    * disk/efi/efidisk.c: Likewise.
    * disk/i386/pc/biosdisk.c: Likewise.
    * disk/ieee1275/ofdisk.c: Likewise.
    * font/manager.c: Likewise.
    * fs/affs.c: Likewise.
    * fs/ext2.c: Likewise.
    * fs/fat.c: Likewise.
    * fs/fshelp.c: Likewise.
    * fs/hfs.c: Likewise.
    * fs/hfsplus.c: Likewise.
    * fs/iso9660.c: Likewise.
    * fs/jfs.c: Likewise.
    * fs/minix.c: Likewise.
    * fs/sfs.c: Likewise.
    * fs/ufs.c: Likewise.
    * fs/xfs.c: Likewise.
    * hello/hello.c: Likewise.
    * include/grub/acorn_filecore.h: Likewise.
    * include/grub/arg.h: Likewise.
    * include/grub/bitmap.h: Likewise.
    * include/grub/boot.h: Likewise.
    * include/grub/cache.h: Likewise.
    * include/grub/device.h: Likewise.
    * include/grub/disk.h: Likewise.
    * include/grub/dl.h: Likewise.
    * include/grub/elfload.h: Likewise.
    * include/grub/env.h: Likewise.
    * include/grub/err.h: Likewise.
    * include/grub/file.h: Likewise.
    * include/grub/font.h: Likewise.
    * include/grub/fs.h: Likewise.
    * include/grub/fshelp.h: Likewise.
    * include/grub/gzio.h: Likewise.
    * include/grub/hfs.h: Likewise.
    * include/grub/kernel.h: Likewise.
    * include/grub/loader.h: Likewise.
    * include/grub/lvm.h: Likewise.
    * include/grub/misc.h: Likewise.
    * include/grub/mm.h: Likewise.
    * include/grub/net.h: Likewise.
    * include/grub/normal.h: Likewise.
    * include/grub/parser.h: Likewise.
    * include/grub/partition.h: Likewise.
    * include/grub/pc_partition.h: Likewise.
    * include/grub/raid.h: Likewise.
    * include/grub/rescue.h: Likewise.
    * include/grub/script.h: Likewise.
    * include/grub/setjmp.h: Likewise.
    * include/grub/symbol.h: Likewise.
    * include/grub/term.h: Likewise.
    * include/grub/terminfo.h: Likewise.
    * include/grub/tparm.h: Likewise.
    * include/grub/types.h: Likewise.
    * include/grub/video.h: Likewise.
    * include/grub/efi/api.h: Likewise.
    * include/grub/efi/chainloader.h: Likewise.
    * include/grub/efi/console.h: Likewise.
    * include/grub/efi/console_control.h: Likewise.
    * include/grub/efi/disk.h: Likewise.
    * include/grub/efi/efi.h: Likewise.
    * include/grub/efi/pe32.h: Likewise.
    * include/grub/efi/time.h: Likewise.
    * include/grub/i386/linux.h: Likewise.
    * include/grub/i386/setjmp.h: Likewise.
    * include/grub/i386/types.h: Likewise.
    * include/grub/i386/efi/kernel.h: Likewise.
    * include/grub/i386/efi/loader.h: Likewise.
    * include/grub/i386/efi/time.h: Likewise.
    * include/grub/i386/pc/biosdisk.h: Likewise.
    * include/grub/i386/pc/boot.h: Likewise.
    * include/grub/i386/pc/chainloader.h: Likewise.
    * include/grub/i386/pc/console.h: Likewise.
    * include/grub/i386/pc/init.h: Likewise.
    * include/grub/i386/pc/kernel.h: Likewise.
    * include/grub/i386/pc/loader.h: Likewise.
    * include/grub/i386/pc/memory.h: Likewise.
    * include/grub/i386/pc/multiboot.h: Likewise.
    * include/grub/i386/pc/serial.h: Likewise.
    * include/grub/i386/pc/time.h: Likewise.
    * include/grub/i386/pc/vbe.h: Likewise.
    * include/grub/i386/pc/vbeblit.h: Likewise.
    * include/grub/i386/pc/vbefill.h: Likewise.
    * include/grub/i386/pc/vbeutil.h: Likewise.
    * include/grub/i386/pc/vga.h: Likewise.
    * include/grub/ieee1275/ieee1275.h: Likewise.
    * include/grub/ieee1275/ofdisk.h: Likewise.
    * include/grub/powerpc/libgcc.h: Likewise.
    * include/grub/powerpc/setjmp.h: Likewise.
    * include/grub/powerpc/types.h: Likewise.
    * include/grub/powerpc/ieee1275/biosdisk.h: Likewise.
    * include/grub/powerpc/ieee1275/console.h: Likewise.
    * include/grub/powerpc/ieee1275/ieee1275.h: Likewise.
    * include/grub/powerpc/ieee1275/kernel.h: Likewise.
    * include/grub/powerpc/ieee1275/loader.h: Likewise.
    * include/grub/powerpc/ieee1275/multiboot.h: Likewise.
    * include/grub/powerpc/ieee1275/time.h: Likewise.
    * include/grub/powerpc/ieee1275/util/biosdisk.h: Likewise.
    * include/grub/sparc64/libgcc.h: Likewise.
    * include/grub/sparc64/setjmp.h: Likewise.
    * include/grub/sparc64/types.h: Likewise.
    * include/grub/sparc64/ieee1275/console.h: Likewise.
    * include/grub/sparc64/ieee1275/ieee1275.h: Likewise.
    * include/grub/sparc64/ieee1275/kernel.h: Likewise.
    * include/grub/sparc64/ieee1275/time.h: Likewise.
    * include/grub/util/biosdisk.h: Likewise.
    * include/grub/util/getroot.h: Likewise.
    * include/grub/util/lvm.h: Likewise.
    * include/grub/util/misc.h: Likewise.
    * include/grub/util/raid.h: Likewise.
    * include/grub/util/resolve.h: Likewise.
    * io/gzio.c: Likewise.
    * kern/device.c: Likewise.
    * kern/disk.c: Likewise.
    * kern/dl.c: Likewise.
    * kern/elf.c: Likewise.
    * kern/env.c: Likewise.
    * kern/err.c: Likewise.
    * kern/file.c: Likewise.
    * kern/fs.c: Likewise.
    * kern/loader.c: Likewise.
    * kern/main.c: Likewise.
    * kern/misc.c: Likewise.
    * kern/mm.c: Likewise.
    * kern/parser.c: Likewise.
    * kern/partition.c: Likewise.
    * kern/rescue.c: Likewise.
    * kern/term.c: Likewise.
    * kern/efi/efi.c: Likewise.
    * kern/efi/init.c: Likewise.
    * kern/efi/mm.c: Likewise.
    * kern/i386/dl.c: Likewise.
    * kern/i386/efi/init.c: Likewise.
    * kern/i386/efi/startup.S: Likewise.
    * kern/i386/pc/init.c: Likewise.
    * kern/i386/pc/lzo1x.S: Likewise.
    * kern/i386/pc/startup.S: Likewise.
    * kern/ieee1275/ieee1275.c: Likewise.
    * kern/powerpc/cache.S: Likewise.
    * kern/powerpc/dl.c: Likewise.
    * kern/powerpc/ieee1275/cmain.c: Likewise.
    * kern/powerpc/ieee1275/crt0.S: Likewise.
    * kern/powerpc/ieee1275/init.c: Likewise.
    * kern/powerpc/ieee1275/openfw.c: Likewise.
    * kern/sparc64/cache.S: Likewise.
    * kern/sparc64/dl.c: Likewise.
    * kern/sparc64/ieee1275/init.c: Likewise.
    * kern/sparc64/ieee1275/openfw.c: Likewise.
    * loader/efi/chainloader.c: Likewise.
    * loader/efi/chainloader_normal.c: Likewise.
    * loader/i386/efi/linux.c: Likewise.
    * loader/i386/efi/linux_normal.c: Likewise.
    * loader/i386/pc/chainloader.c: Likewise.
    * loader/i386/pc/chainloader_normal.c: Likewise.
    * loader/i386/pc/linux.c: Likewise.
    * loader/i386/pc/linux_normal.c: Likewise.
    * loader/i386/pc/multiboot.c: Likewise.
    * loader/i386/pc/multiboot_normal.c: Likewise.
    * loader/powerpc/ieee1275/linux.c: Likewise.
    * loader/powerpc/ieee1275/linux_normal.c: Likewise.
    * normal/arg.c: Likewise.
    * normal/cmdline.c: Likewise.
    * normal/command.c: Likewise.
    * normal/completion.c: Likewise.
    * normal/execute.c: Likewise.
    * normal/function.c: Likewise.
    * normal/lexer.c: Likewise.
    * normal/main.c: Likewise.
    * normal/menu.c: Likewise.
    * normal/menu_entry.c: Likewise.
    * normal/misc.c: Likewise.
    * normal/parser.y: Likewise.
    * normal/script.c: Likewise.
    * normal/i386/setjmp.S: Likewise.
    * normal/powerpc/setjmp.S: Likewise.
    * normal/sparc64/setjmp.S: Likewise.
    * partmap/acorn.c: Likewise.
    * partmap/amiga.c: Likewise.
    * partmap/apple.c: Likewise.
    * partmap/gpt.c: Likewise.
    * partmap/pc.c: Likewise.
    * partmap/sun.c: Likewise.
    * term/gfxterm.c: Likewise.
    * term/terminfo.c: Likewise.
    * term/efi/console.c: Likewise.
    * term/i386/pc/console.c: Likewise.
    * term/i386/pc/serial.c: Likewise.
    * term/i386/pc/vesafb.c: Likewise.
    * term/i386/pc/vga.c: Likewise.
    * term/ieee1275/ofconsole.c: Likewise.
    * util/biosdisk.c: Likewise.
    * util/console.c: Likewise.
    * util/genmoddep.c: Likewise.
    * util/getroot.c: Likewise.
    * util/grub-emu.c: Likewise.
    * util/grub-mkdevicemap.c: Likewise.
    * util/grub-probe.c: Likewise.
    * util/lvm.c: Likewise.
    * util/misc.c: Likewise.
    * util/raid.c: Likewise.
    * util/resolve.c: Likewise.
    * util/update-grub.in: Likewise.
    * util/update-grub_lib.in: Likewise.
    * util/grub.d/00_header.in: Likewise.
    * util/grub.d/10_hurd.in: Likewise.
    * util/grub.d/10_linux.in: Likewise.
    * util/i386/efi/grub-install.in: Likewise.
    * util/i386/efi/grub-mkimage.c: Likewise.
    * util/i386/pc/grub-install.in: Likewise.
    * util/i386/pc/grub-mkimage.c: Likewise.
    * util/i386/pc/grub-mkrescue.in: Likewise.
    * util/i386/pc/grub-setup.c: Likewise.
    * util/i386/pc/misc.c: Likewise.
    * util/powerpc/ieee1275/grub-install.in: Likewise.
    * util/powerpc/ieee1275/grub-mkimage.c: Likewise.
    * util/powerpc/ieee1275/misc.c: Likewise.
    * video/bitmap.c: Likewise.
    * video/video.c: Likewise.
    * video/i386/pc/vbe.c: Likewise.
    * video/i386/pc/vbeblit.c: Likewise.
    * video/i386/pc/vbefill.c: Likewise.
    * video/i386/pc/vbeutil.c: Likewise.
    * video/readers/tga.c: Likewise.

	* include/grub/err.h (grub_err_t): Add `GRUB_ERR_MENU'.

	* kern/env.c (grub_env_unset): Don't free the member `value' when
	the type is GRUB_ENV_VAR_DATA, in this case it's a user defined
	pointer.

	* normal/main.c (current_menu): Removed.
	(free_menu): Unset the `menu' environment variable.
	(grub_normal_menu_addentry): Make use of the environment variable
	`menu', instead of using the global `current_menu'.  Allocate
	memory for the sourcecode of this entry.
	(read_config_file): New argument `nested', changed all callers.
	Only in the case of a new context, initialize a new menu.  Set the
	`menu' environment variable.
	(grub_normal_execute): Don't set and unset the environment
	variable `menu' here anymore.  Only free the menu when leaving the
	context.

	* util/i386/pc/biosdisk.c (linux_find_partition): Fixed a memory
	leak.

        * kern/env.c (struct grub_env_context): Removed "sorted". Renamed
        "next" to "prev" for readability.
        (struct grub_env_sorted_var): New struct.
        (grub_env_context): Renamed to ...
        (initial_context): ... this.
        (grub_env_var_context): Renamed to ...
        (current_context): ... this.
        (grub_env_find): Look only at CURRENT_CONTEXT.
        (grub_env_context_open): Rewritten to copy exported variables from
        previous context.
        (grub_env_context_close): Rewritten according to the new
        scheme. Also, add an assertion to prevent the initial context from
        removed.
        (grub_env_insert): Removed the code for the sorted list.
        (grub_env_remove): Likewise.
        (grub_env_export): Simply mark the variable with
        GRUB_ENV_VAR_GLOBAL.
        (grub_env_set): A cosmetic change for naming consistency.
        (grub_env_get): Likewise.
        (grub_env_unset): Likewise.
        (grub_env_iterate): Rewritten to sort variables within this
        function.
        (grub_register_variable_hook): Fixed for naming consistency. Call
        grub_env_find again, only if NAME is not found at the first time.
        (mangle_data_slot_name): New function.
        (grub_env_set_data_slot): Likewise.
        (grub_env_get_data_slot): Likewise.
        (grub_env_unset_data_slot): Likewise.

        * include/grub/env.h (grub_env_var_type): New enum.
        (GRUB_ENV_VAR_LOCAL): New constant.
        (GRUB_ENV_VAR_GLOBAL): Likewise.
        (GRUB_ENV_VAR_DATA): Likewise.
        (struct grub_env_var): Removed "sort_next" and "sort_prevp". Added
        "type".
        (grub_env_set): Replace VAR with NAME for consistency.
        (grub_register_variable_hook): Likewise.
        (grub_env_export): Specify the name of the argument.
        (grub_env_set_data_slot): New prototype.
        (grub_env_get_data_slot): Likewise.
        (grub_env_unset_data_slot): Likewise.

	* commands/configfile.c (grub_cmd_configfile): Execute the
	configfile within its own context.

	* include/grub/env.h (grub_env_context_open): New prototype.
	(grub_env_context_close): Likewise.

	* kern/env.c (grub_env): Removed.
	(grub_env_sorted): Likewise.
	(grub_env_context): New variable.
	(grub_env_var_context): Likewise.
	(grub_env_find): Search both the active context and the global
	context.
	(grub_env_context_open): New function.
	(grub_env_context_close): Likewise.
	(grub_env_insert): Likewise.
	(grub_env_remove): Likewise.
	(grub_env_export): Likewise.
	(grub_env_set): Changed to use helper functions to avoid code
	duplication.
	(grub_env_iterate): Rewritten so both the current context and the
	global context are being used.

	* normal/command.c (export_command): New function.
	(grub_command_init): Register the `export' function.

        * kern/env.c (grub_env_set): Check if ENV->VALUE instead of
        ENV->NAME is NULL after allocating ENV->VALUE.

	* kern/env.c (grub_env_set): Rewritten the error handling code.

	Change the semantics of variable hooks. They now return	strings
	instead of error values.

	* util/i386/pc/grub-setup.c: Include grub/env.h.
	(setup): Use grub_device_set_root instead of grub_env_set.

	* kern/rescue.c (grub_rescue_cmd_root): Use grub_env_set and
	grub_env_get instead of grub_device_set_root and
	grub_device_get_root, respectively.

	* kern/main.c (grub_env_write_root): New function.
	(grub_set_root_dev): Register grub_env_write_hook for "root". Use
	grub_env_set instead of grub_device_set_root.

	* kern/env.c (HASHSZ): Reduced to 13, because GRUB does not need
	many variables.
	(grub_env_set): Set ENV->VALUE to the result of ENV->WRITE_HOOK
	rather than calling ENV->WRITE_HOOK afterwards.
	(grub_env_get): Return the result of ENV->READ_HOOK rather than
	passing a pointer of a pointer.
	(grub_register_variable_hook): Change the types of "read_hook" and
	"write_hook" to grub_env_read_hook_t and grub_env_write_hook_t,
	respectively.
	Allocate the default empty string on the heap, because this string
	may be freed later.

	* kern/device.c: Include grub/env.h.
	(grub_device_set_root): Removed.
	(grub_device_get_root): Likewise.
	(grub_device_open): Use grub_env_get instead of
	grub_device_get_root.

	* include/grub/env.h (grub_env_read_hook_t): New type.
	(grub_env_write_hook_t): Likewise.
	(grub_env_var): Change the types of "read_hook" and "write_hook"
	to grub_env_read_hook_t and grub_env_write_hook_t, respectively.
	(grub_register_variable_hook): Likewise.

	* include/grub/device.h (grub_device_set_root): Removed.
	(grub_device_set_root): Likewise.

	* fs/fat.c (grub_fat_dir): Make a copy of PATH in DIRNAME, and
	make sure that DIRNAME terminates with '/', so that
	grub_fat_find_dir will fail if PATH is not a directory.

	* commands/ls.c (grub_ls_list_files): Remove the qualifier const
	from DIRNAME.
	Use the qualifier auto for print_files and print_files_long.
	If FS->DIR sets GRUB_ERRNO to GRUB_ERR_BAD_FILE_TYPE, try DIRNAME
	as a regular file.
	Put a newline only if there is no error.
	(grub_cmd_ls): Remove grub_ls_print_files, because this is not
	used.

	All symbols prefixed with PUPA_ and pupa_ are renamed to GRUB_
	and grub_, respectively. Because the conversion is trivial and
	mechanical, I omit the details here. Please refer to the CVS
	if you need more information.

	* commands/boot.c: New file.
	* commands/cat.c: Likewise.
	* commands/cmp.c: Likewise.
	* commands/ls.c: Likewise.
	* commands/terminal.c: Likewise.
	* normal/command.c: Include <pupa/env.h> and <pupa/dl.h>.
	(pupa_register_command): Changed interface to match the new
	argument parser.
	(pupa_command_execute): Changed (almost rewritten) so it uses
	pupa_split_command.  Added support for setting variables using the
	syntax `foo=bar'.
	(rescue_command): Changed to work with the new argument parser.
	(terminal_command): Moved from here to commands/terminal.c.
	(set_command): New function.
	(unset_command): New function.
	(insmod_command): New function.
	(rmmod_command): New function.
	(lsmod_command): New function.
	(pupa_command_init): Don't initialize the command terminal
	anymore.  Initialize the commands set, unset, insmod, rmmod and
	lsmod.
	* conf/i386-pc.rmk (kernel_img_SOURCES): Add kern/env.c.
	(kernel_img_HEADERS): Add arg.h and env.h.
	(pupa_mkimage_LDFLAGS): Add kern/env.c.
	(pupa_emu_SOURCES): Add kern/env.c, commands/ls.c,
	commands/terminal.c commands/boot.c commands/cmp.c commands/cat.c,
	normal/arg.c.
	(pkgdata_MODULES): Add ls.mod, boot.mod, cmp.mod, cat.mod and
	terminal.mod.
	(normal_mod_SOURCES): Add normal/arg.c and normal/arg.c.
	(boot_mod_SOURCES): New variable.
	(terminal_mod_SOURCES): Likewise.
	(ls_mod_SOURCES): Likewise.
	(cmp_mod_SOURCES): Likewise.
	(cat_mod_SOURCES): Likewise.

	* normal/arg.c: New file.
	* kern/env.c: Likewise.
	* include/pupa/arg.h: Likewise.
	* include/pupa/env.h: Likewise.
	* font/manager.c (font_command): Changed to match argument parsing
	interface changes.
	(PUPA_MOD_INIT): Likewise.
	* hello/hello.c (pupa_cmd_hello): Likewise.
	(PUPA_MOD_INIT): Likewise.
	* include/pupa/disk.h: Include <pupa/device.h>.
	(pupa_print_partinfo): New prototype.
	* include/pupa/dl.h (pupa_dl_set_prefix): Prototype removed.
	(pupa_dl_get_prefix): Likewise.
	* include/pupa/misc.h: Include <pupa/err.h>.
	(pupa_isgraph): New prototype.
	(pupa_isdigit): Likewise.
	(pupa_split_cmdline): Likewise.
	* include/pupa/normal.h: Include <pupa/arg.h>.
	(pupa_command): Changed the prototype of the member `func' to
	match the argument parsing interface.  Added member `options'.
	(pupa_register_command): Updated to match function.
	(pupa_arg_parse): New prototype.
	(pupa_hello_init) [PUPA_UTIL]: New prototype.
	(pupa_hello_fini) [PUPA_UTIL]: Likewise.
	(pupa_ls_init) [PUPA_UTIL]: Likewise.
	(pupa_ls_fini) [PUPA_UTIL]: Likewise.
	(pupa_cat_init) [PUPA_UTIL]: Likewise.
	(pupa_cat_fini) [PUPA_UTIL]: Likewise.
	(pupa_boot_init) [PUPA_UTIL]: Likewise.
	(pupa_boot_fini) [PUPA_UTIL]: Likewise.
	(pupa_cmp_init) [PUPA_UTIL]: Likewise.
	(pupa_cmp_fini) [PUPA_UTIL]: Likewise.
	(pupa_terminal_init) [PUPA_UTIL]: Likewise.
	(pupa_terminal_fini) [PUPA_UTIL]: Likewise.
	* kern/disk.c: Include <pupa/file.h>.
	(pupa_print_partinfo): New function.
	* kern/dl.c: Include <pupa/env.h>.
	(pupa_dl_dir): Variable removed.
	(pupa_dl_load): Use the environment variable `prefix' instead of
	the variable pupa_dl_dir.
	(pupa_dl_set_prefix): Function removed.
	(pupa_dl_get_prefix): Likewise.
	* kern/i386/pc/init.c: Include <pupa/env.h>.
	(pupa_machine_init): Use the environment variable `prefix' instead of
	using pupa_dl_set_prefix to set the prefix.
	* kern/main.c: Include <pupa/env.h>.
	(pupa_set_root_dev): Use the environment variable `prefix' instead of
	using pupa_dl_get_prefix to get the prefix.
	* kern/misc.c: Include <pupa/env.h>.
	(pupa_isdigit): New function.
	(pupa_isgraph): Likewise.
	(pupa_ftoa): Likewise.
	(pupa_vsprintf): Added support for printing values of the type
	`double'.  Make it possible to format variable output when using
	formatting like `%1.2%f'.
	(pupa_split_cmdline): New function.
	* kern/rescue.c: Include <pupa/env.h>.
	(next_word): Removed function.
	(pupa_rescue_cmd_prefix): Likewise.
	(pupa_rescue_cmd_set): New function.
	(pupa_rescue_cmd_unset): New function.
	(pupa_enter_rescue_mode): Use the `pupa_split_cmdline' function to
	split the command line instead of splitting it here.  Added
	support for setting variables using the syntax `foo=bar'.  Don't
	initialize the prefix command anymore.  Initialized the set and
	unset commands.
	* normal/cmdline.c: Include <pupa/env.h>.
	(pupa_tab_complete): Added prototypes for print_simple_completion,
	print_partition_completion, add_completion, iterate_commands,
	iterate_dev, iterate_part and iterate_dir. Moved code to print
	partition information from here to kern/disk.c.
	(pupa_cmdline_run): Don't check if the funtion exists anymore.
	* normal/main.c: Include <pupa/env.h>.
	(pupa_rescue_cmd_normal): Use the environment variable `prefix'
	instead of using pupa_dl_get_prefix to get the prefix.
	* term/i386/pc/vga.c: Include <pupa/arg.h>.
	(check_vga_mem): Cast pointers to `void *' to silence a gcc
	warning.
	(pupa_vga_putchar) [! DEBUG_VGA]: Removed for this case.
	(pupa_vga_setcolor): Declare unused variables with `__attribute__
	((unused))' to silence a gcc warning.
	(pupa_vga_setcolor): Likewise.
	(debug_command): Changed to match argument parsing
	interface changes.
	* util/pupa-emu.c: Include <pupa/env.h>.
	(options): Added 0's for unused fields to silence a gcc warning.
	(argp): Likewise.
	(main): Use the environment variable `prefix' instead of using
	pupa_dl_set_prefix to set the prefix.  Initialize the commands ls,
	boot, cmp, cat and terminal.  Finish the commands boot, cmp, cat
	and terminal.

	* util/i386/pc/getroot.c: Include <pupa/i386/pc/util/biosdisk.h>.
	* util/misc.c: Include <malloc.h>.
	(pupa_malloc): Rewritten so errors are correctly reported.
	(pupa_realloc): Likewise.
	(pupa_memalign): Likewise.
	(pupa_mm_init_region): Declare unused variables with
	`__attribute__ ((unused))' to silence a gcc warning.
	* normal/i386/setjmp.S: Remove tab at the end of the file to
	silence a gcc warning.
	* loader/i386/pc/linux.c (pupa_rescue_cmd_initrd): Declare unused
	variables with `__attribute__ ((unused))' to silence a gcc
	warning.
	* loader/i386/pc/multiboot.c (pupa_multiboot_unload): Make the
	local variable i unsigned to silence a gcc warning.

	* kern/term.c: Include <pupa/misc.h>.
	(pupa_more_lines): New variable.
	(pupa_more): Likewise.
	(pupa_putcode): When the pager is active pause at the end of every
	screen.
	(pupa_set_more): New function.
	* include/pupa/term.h (pupa_set_more): New prototype.