all vars to a macro. All users updated.

	on it.

	* bus/usb/usbhub.c: Fix capitalization, fullstop and newlines in
	grub_errno calls.
	* commands/acpi.c: Likewise.
	* commands/blocklist.c: Likewise.
	* commands/efi/loadbios.c: Likewise.
	* commands/i386/pc/drivemap.c: Likewise.
	* commands/loadenv.c: Likewise.
	* commands/memrw.c: Likewise.
	* commands/password.c: Likewise.
	* commands/videotest.c: Likewise.
	* disk/ata.c: Likewise.
	* disk/ata_pthru.c: Likewise.
	* disk/dmraid_nvidia.c: Likewise.
	* disk/ieee1275/nand.c: Likewise.
	* disk/ieee1275/ofdisk.c: Likewise.
	* disk/loopback.c: Likewise.
	* disk/lvm.c: Likewise.
	* disk/mdraid_linux.c: Likewise.
	* disk/raid.c: Likewise.
	* disk/raid6_recover.c: Likewise.
	* disk/scsi.c: Likewise.
	* efiemu/main.c: Likewise.
	* efiemu/mm.c: Likewise.
	* efiemu/pnvram.c: Likewise.
	* efiemu/symbols.c: Likewise.
	* font/font.c: Likewise.
	* fs/cpio.c: Likewise.
	* fs/hfsplus.c: Likewise.
	* fs/iso9660.c: Likewise.
	* fs/jfs.c: Likewise.
	* fs/minix.c: Likewise.
	* fs/ntfs.c: Likewise.
	* fs/ntfscomp.c: Likewise.
	* fs/reiserfs.c: Likewise.
	* fs/ufs.c: Likewise.
	* fs/xfs.c: Likewise.
	* gettext/gettext.c: Likewise.
	* include/grub/auth.h: Likewise.
	* kern/elf.c: Likewise.
	* kern/file.c: Likewise.
	* kern/ieee1275/init.c: Likewise.
	* kern/ieee1275/mmap.c: Likewise.
	* kern/ieee1275/openfw.c: Likewise.
	* kern/powerpc/dl.c: Likewise.
	* kern/sparc64/dl.c: Likewise.
	* lib/arg.c: Likewise.
	* loader/i386/bsd.c: Likewise.
	* loader/i386/bsdXX.c: Likewise.
	* loader/i386/efi/linux.c: Likewise.
	* loader/i386/efi/xnu.c: Likewise.
	* loader/i386/ieee1275/linux.c: Likewise.
	* loader/i386/linux.c: Likewise.
	* loader/i386/multiboot.c: Likewise.
	* loader/i386/pc/linux.c: Likewise.
	* loader/i386/pc/multiboot2.c: Likewise.
	* loader/i386/xnu.c: Likewise.
	* loader/ieee1275/multiboot2.c: Likewise.
	* loader/macho.c: Likewise.
	* loader/machoXX.c: Likewise.
	* loader/multiboot2.c: Likewise.
	* loader/multiboot_loader.c: Likewise.
	* loader/powerpc/ieee1275/linux.c: Likewise.
	* loader/sparc64/ieee1275/linux.c: Likewise.
	* loader/xnu.c: Likewise.
	* loader/xnu_resume.c: Likewise.
	* mmap/i386/pc/mmap.c: Likewise.
	* normal/menu_viewer.c: Likewise.
	* partmap/acorn.c: Likewise.
	* partmap/amiga.c: Likewise.
	* partmap/apple.c: Likewise.
	* script/lexer.c: Likewise.
	* term/gfxterm.c: Likewise.
	* term/i386/pc/serial.c: Likewise.
	* term/i386/pc/vga.c: Likewise.
	* term/ieee1275/ofconsole.c: Likewise.
	* term/terminfo.c: Likewise.
	* video/bitmap.c: Likewise.
	* video/efi_gop.c: Likewise.
	* video/efi_uga.c: Likewise.
	* video/fb/video_fb.c: Likewise.
	* video/i386/pc/vbe.c: Likewise.
	* video/readers/tga.c: Likewise.
	* video/video.c: Likewise.

	* 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.

	Efiemu
 
	* conf/i386-pc.rmk: new modules efiemu, efiemu_acpi, efiemu_pnvram,
	_linux_efi, linux_efi. 
	new files in grub-emu 
	new targets efiemu32.o and efiemu64.o
	* loader/linux_normal_efiemu.c: likewise
	* loader/i386/efi/linux.c: added preliminary efiemu support
	* util/i386/pc/grub-install.in: add efiemu??.o to the list of 
	files to copy
	* include/grub/autoefi.h: new file
	* nclude/grub/i386/efiemu.h: likewise
	* include/grub/i386/pc/efiemu.h: likewise
	* include/grub/efi/api.h: add LL suffix when necessary
	new definitions relating to tables
	* include/grub/efiemu/efiemu.h: new file
	* include/grub/efiemu/runtime.h: likewise
	* efiemu/prepare.c: likewise
	* efiemu/loadcore_common.c: likewise
	* efiemu/loadcore64.c: likewise
	* efiemu/runtime/efiemu.sh: likewise
	* efiemu/runtime/efiemu.S: likewise
	* efiemu/runtime/efiemu.c: likewise
	* efiemu/runtime/config.h: likewise
	* efiemu/prepare32.c: likewise
	* efiemu/main.c: likewise
	* efiemu/modules/pnvram.c: likewise
	* efiemu/modules/i386: likewise
	* efiemu/modules/i386/pc: likewise
	* efiemu/modules/acpi.c: likewise
	* efiemu/i386/pc/cfgtables.c: likewise
	* efiemu/i386/loadcore64.c: likewise
	* efiemu/i386/loadcore32.c: likewise
	* efiemu/prepare64.c: likewise
	* efiemu/loadcore.c: likewise
	* efiemu/symbols.c: likewise
	* efiemu/mm.c: likewise
	* efiemu/loadcore32.c: likewise