Remove assignment in if while on it.

	on it.

	* include/grub/misc.h (grub_isxdigit): New function.
	* grub-core/video/colors.c (my_isxdigit): Removed. All users
	switched to grub_isxdigit.
	* grub-core/term/serial.c (grub_serial_find): Fix in case of port
	number starting with a letter.

	* grub-core/fs/romfs.c: Likewise.
	* grub-core/lib/ia64/setjmp.S: Likewise.
	* grub-core/loader/i386/pc/freedos.c: Likewise.
	* grub-core/loader/ia64/efi/linux.c: Likewise.
	* grub-core/video/colors.c: Likewise.
	* include/grub/dl.h (GRUB_MOD_DEP): New macro.

too.

* grub-core/gfxmenu/named_colors.c: Move to ...
* grub-core/video/colors.c: ... here.  Rename
grub_gui_get_named_color to grub_video_get_named_color.
* grub-core/gfxmenu/gui_string_util.c (my_isxdigit): Move to ...
* grub-core/video/colors.c (my_isxdigit): ... here.
* grub-core/gfxmenu/gui_string_util.c (parse_hex_color_component):
Move to ...
* grub-core/video/colors.c (parse_hex_color_component): ... here.
* grub-core/gfxmenu/gui_string_util.c (grub_gui_parse_color): Move
to ...
* grub-core/video/colors.c (grub_video_parse_color): ... here.

* include/grub/gui.h (grub_gui_color_t): Move to ...
* include/grub/video.h (grub_video_rgba_color_t): ... here.
* include/grub/gui.h (grub_gui_color_rgb): Move to ...
* include/grub/video.h (grub_video_rgba_color_rgb): ... here.
* include/grub/gui.h (grub_gui_map_color): Move to ...
* include/grub/video.h (grub_video_map_rgba_color): ... here.
* include/grub/gui_string_util.h (grub_gui_get_named_color): Move
to ...
* include/grub/video.h (grub_video_get_named_color): ... here.
* include/grub/gui_string_util.h (grub_gui_parse_color): Move to ...
* include/grub/video.h (grub_video_parse_color): ... here.

* grub-core/Makefile.core.def (kernel) [videoinkernel]: Add
video/colors.c.
(gfxmenu): Remove gfxmenu/named_colors.c.
(video_colors) [videomodules]: New module, containing
video/colors.c.