case of password-protected prompt and no menu entries.

Add a new timeout_style environment variable and a corresponding
GRUB_TIMEOUT_STYLE configuration key for grub-mkconfig.  This
controls hidden-timeout handling more simply than the previous
arrangements, and pressing any hotkeys associated with menu entries
during the hidden timeout will now boot the corresponding menu entry
immediately.

GRUB_HIDDEN_TIMEOUT=<non-empty> + GRUB_TIMEOUT=<non-zero> now
generates a warning, and if it shows the menu it will do so as if
the second timeout were not present.  Other combinations are
translated into reasonable equivalents.

	off new function grub_script_execute_new_scope. Change callers to use
	either of them as appropriate.
	* grub-core/commands/eval.c: New command eval.
	* docs/grub.texi (Commands): Document it.

	command.

	* include/grub/term.h (grub_term_output): New member fullscreen.
	* include/grub/gfxterm.h (grub_gfxterm_fullscreen): Removed.
	* grub-core/term/gfxterm.c (grub_gfxterm_fullscreen): Make static.
	(grub_gfxterm): Set .fullscreen.
	* grub-core/normal/menu.c (menu_init): Use fullscreen.
	* grub-core/gfxmenu/gfxmenu.c (GRUB_MOD_INIT): Likewise.

	* grub-core/commands/menuentry.c (options): New option --id.
	(grub_normal_add_menu_entry): New argument id. All users updated.
	(grub_cmd_menuentry): Handle --id.
	(grub_menu_init): Accept unknown arguments.
	* grub-core/normal/main.c (features): Add feature_menuentry_id and
	feature_menuentry_options.
	* grub-core/normal/menu.c (grub_menu_execute_entry): Use id for
	saved_entry.
	(get_entry_number): Match with id as well.
	* include/grub/menu.h (grub_menu_entry): New member id.
	* util/grub-mkconfig_lib.in (grub_get_device_id): New function.
	* util/grub.d/00_header.in: Define menuentry_id_option.
	* util/grub.d/10_hurd.in: Define id.
	* util/grub.d/10_illumos.in: Likewise.
	* util/grub.d/10_kfreebsd.in: Likewise.
	* util/grub.d/10_linux.in: Likewise.
	* util/grub.d/10_netbsd.in: Likewise.
	* util/grub.d/10_windows.in: Likewise.
	* util/grub.d/20_linux_xen.in: Likewise.
	* util/grub.d/30_os-prober.in: Likewise.

	* grub-core/commands/ieee1275/suspend.c: Likewise.
	* grub-core/commands/parttool.c: Likewise.
	* grub-core/commands/search_wrap.c: Likewise.
	* grub-core/commands/videoinfo.c: Likewise.
	* grub-core/gfxmenu/gui_label.c: Likewise.
	* grub-core/hello/hello.c: Likewise.
	* grub-core/kern/emu/main.c: Likewise.
	* grub-core/net/net.c: Likewise.
	* grub-core/normal/menu.c: Likewise.
	* grub-core/normal/menu_text.c: Likewise.
	* grub-core/normal/misc.c: Likewise.
	* util/grub-editenv.c: Likewise.
	* util/grub-install.in: Likewise.
	* util/grub-kbdcomp.in: Likewise.
	* util/grub-mkconfig.in: Likewise.
	* util/grub-mknetdir.in: Likewise.
	* util/grub-mkrescue.in: Likewise.
	* util/grub-mkstandalone.in: Likewise.
	* util/grub-reboot.in: Likewise.
	* util/grub-set-default.in: Likewise.
	* util/grub-setup.c: Likewise.
	* util/powerpc/ieee1275/grub-mkrescue.in: Likewise.

	* grub-core/kern/term.c (grub_checkkey): Replaced with ...
	(grub_getkey_noblock): ... this. All users updated.

	* grub-core/bus/cs5536.c (grub_cs5536_smbus_wait): Remove unreachable
	code.
	* grub-core/commands/halt.c (grub_cmd_halt): Remove unreachable
	code. Mark as noreturn.
	* grub-core/commands/minicmd.c (grub_mini_cmd_exit): Likewise.
	* grub-core/commands/reboot.c (grub_cmd_reboot): Likewise.
	* grub-core/disk/efi/efidisk.c (grub_efidisk_get_device_name): Remove
	unreachable code.
	* grub-core/kern/main.c (grub_main): Mark as noreturn.
	* grub-core/kern/rescue_reader.c (grub_rescue_run): Likewise.
	* grub-core/lib/posix_wrap/stdlib.h (abort): Likewise.
	* grub-core/normal/menu.c (run_menu): Remove unreachable code.
	* include/grub/kernel.h (grub_main): Mark as noreturn.
	* include/grub/reader.h (grub_rescue_run): Likewise.

	* 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.

	dereference.

	* grub-core/gfxmenu/gfxmenu.c (grub_gfxmenu_try): Move the call to
	grub_gfxterm_fullscreen on error paths to ...
	* grub-core/normal/menu.c (menu_init): ...here. Wait after showing
	theme loading error.

	warning.
	* grub-core/normal/menu.c (grub_menu_execute_entry): Likewise.
	* grub-core/partmap/msdos.c (pc_partition_map_embed): Use unsigned
	counter.

	* grub-core/normal/menu.c (grub_menu_execute_entry): New parameter
	auto_boot. All users updated.
	Declared static.
	Handle chosen and default with submenus.
	(grub_menu_execute_with_fallback): Declared static.
	Don't notify failure if autobooted. Upper level does it.
	(menuentry_eq): New function.
	(get_entry_number): Use menuentry_eq.
	(show_menu): New parameter "autobooted". All users updated.
	(grub_show_menu): Likewise.
	* include/grub/normal.h (grub_show_menu): Likewise.
	* include/grub/menu.h (grub_menu_execute_entry): Removed.
	(grub_menu_execute_with_fallback): Likewise.

	* grub-core/commands/menuentry.c (grub_normal_add_menu_entry): New
	parameter submenu. All users updated.
	* grub-core/normal/main.c (free_menu): Rename to ...
	(grub_normal_free_menu): ... this. Made global.
	* grub-core/normal/menu.c (grub_menu_execute_entry): Open new context
	if requested.
	* grub-core/normal/menu_entry.c (screen): New field submenu.
	(make_screen): Set submenu.
	(run): Open new context if requested.
	* include/grub/menu.h (grub_menu_entry): New field submenu.
	* include/grub/normal.h (grub_normal_free_menu): New proto.

	has a chance to see them.

	* grub-core/kern/err.c (grub_err_printed_errors): New variable.
	(grub_print_error): Increment grub_err_printed_errors.
	* grub-core/normal/menu.c (grub_menu_execute_entry): Pause the
	execution if any errors were displayed.
	(show_menu): Remove old code for pause.
	* grub-core/normal/menu_entry.c (run): Likewise.
	* grub-core/normal/term.c (grub_normal_char_counter): Removed. All
	users updated.
	(grub_normal_get_char_counter): Likewise.
	* include/grub/err.h (grub_err_printed_errors): New external variable.
	* include/grub/normal.h (grub_normal_get_char_counter): Removed.

	timeout to avoid indefinite boot stalling.

	Wait for user entry basing on presence of output rather than on errors.

	* include/grub/normal.h (grub_normal_get_line_counter): New proto.
	(grub_install_newline_hook): Likewise.
	* normal/main.c (GRUB_MOD_INIT): Call grub_install_newline_hook.
	* normal/menu.c (show_menu): Check line_counter to determine presence
	of output.
	* normal/term.c (grub_normal_line_counter): New variable.
	(grub_normal_get_line_counter): New function.
	(grub_install_newline_hook): Likewise.

	
	* normal/menu.c (notify_execution_failure): Clarify error message.
	

	* normal/menu_text.c (get_entry_number): Move from here ...
	* normal/menu.c (get_entry_number): ... moved here.
	* include/grub/menu.h (grub_menu_get_default_entry_index):
	New prototype.
	* normal/menu.c (grub_menu_get_default_entry_index): New function.
	* normal/menu_text.c (run_menu): Use grub_menu_get_default_entry_index.