* commands/cat.c (GRUB_MOD_INIT): Use better documentation.
(grub_cat_init): Likewise.
* loader/i386/pc/chainloader_normal.c (GRUB_MOD_INIT): Likewise.
(options): Likewise.
* commands/configfile.c (GRUB_MOD_INIT): Likewise.
(grub_configfile_init): Likewise.
* font/manager.c (GRUB_MOD_INIT): Likewise.
* commands/help.c (GRUB_MOD_INIT): Likewise.
(grub_help_init): Likewise.
* normal/command.c (grub_command_init): Likewise.
* loader/i386/pc/linux_normal.c (GRUB_MOD_INIT): Likewise.
* disk/loopback.c (grub_loop_init): Likewise.
(GRUB_MOD_INIT): Likewise.
* commands/ls.c (grub_ls_init): Likewise.
(GRUB_MOD_INIT): Likewise.
(options): Likewise.
* commands/boot.c (grub_boot_init): Likewise.
(GRUB_MOD_INIT): Likewise.
* loader/i386/pc/multiboot_normal.c (GRUB_MOD_INIT): Likewise.
* commands/i386/pc/reboot.c (grub_reboot_init): Likewise.
(GRUB_MOD_INIT): Likewise.
* commands/cmp.c (grub_cmp_init): Likewise.
(GRUB_MOD_INIT): Likewise.
* normal/arg.c: Use <> instead of "" to include header files.
(SHORT_ARG_HELP): New macro.
(SHORT_ARG_USAGE): Likewise.
(help_options): Specify SHORT_ARG_HELP and SHORT_ARG_USAGE instead
of 'h' and 'u' for help and usage, respectively. Use more GNU-like
descriptions.
(find_short): Check if C is 'h' or 'u' explicitly.
(grub_arg_show_help): Use space characters instead of tabs. Treat
SHORT_ARG_HELP and SHORT_ARG_USAGE exceptionally so that -h and -u
are shown with --help and --usage only if they are not used for
the command itself.
(parse_option): Use SHORT_ARG_HELP and SHORT_ARG_USAGE instead of
'h' and 'u'.
* include/grub/arg.h (struct grub_arg_option): Add the qualifier
const into "longarg". Change the type of "shortarg" to int.
Add the loopback device, a device via which files can be accessed
as devices.
* conf/i386-pc.rmk (grub_emu_SOURCES): Add `disk/loopback.c'.
(pkgdata_MODULES): Add loopback.mod.
(loopback_mod_SOURCES): New variable.
(loopback_mod_CFLAGS): Likewise.
* conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Add
`disk/loopback.c'.
(pkgdata_MODULES): Add loopback.mod.
(loopback_mod_SOURCES): New variable.
(loopback_mod_CFLAGS): Likewise.
* disk/loopback.c: new file.
* include/grub/normal.h (grub_loop_init): New prototype.
(grub_loop_fini): New prototype.
* util/grub-emu.c (main): Initialize and de-initialize loopback
support.
* include/grub/disk.h (grub_disk_dev_id): Add
`GRUB_DISK_DEVICE_LOOPBACK_ID'.
