* grub-core/gfxmenu/gui_canvas.c: Likewise.
        * grub-core/gfxmenu/view.c: Likewise.
        * grub-core/video/fb/video_fb.c: Introduce new functions:
        grub_video_set_area_status, grub_video_get_area_status,
        grub_video_set_region, grub_video_get_region.
        * grub-core/video/bochs.c: Likewise.
        * grub-core/video/capture.c: Likewise.
        * grub-core/video/video.c: Likewise.
        * grub-core/video/cirrus.c: Likewise.
        * grub-core/video/efi_gop.c: Likewise.
        * grub-core/video/efi_uga.c: Likewise.
        * grub-core/video/emu/sdl.c: Likewise.
        * grub-core/video/radeon_fuloong2e.c: Likewise.
        * grub-core/video/sis315pro.c: Likewise.
        * grub-core/video/sm712.c: Likewise.
        * grub-core/video/i386/pc/vbe.c: Likewise.
        * grub-core/video/i386/pc/vga.c: Likewise.
        * grub-core/video/ieee1275.c: Likewise.
        * grub-core/video/i386/coreboot/cbfb.c: Likewise.
        * include/grub/video.h: Likewise.
        * include/grub/video_fb.h: Likewise.
        * include/grub/fbfill.h: Updated render_target structure.
        grub_video_rect_t viewport, region, area
        int area_offset_x, area_offset_y, area_enabled
        * include/grub/gui.h: New helper function
        grub_video_bounds_inside_region.
        * docs/grub-dev.texi: Added information about new functions.

	* include/grub/video_fb.h (grub_video_fb_doublebuf_update_screen_t):
	Move from here ...
	* grub-core/video/fb/video_fb.c
	(grub_video_fb_doublebuf_update_screen_t): ... here. Remove arguments.
	* grub-core/video/fb/video_fb.c (framebuf_t): New type.
	(front_target): Remove front_target. Add pages.
	(grub_video_fb_init): Skip setting front_pages.
	(grub_video_fb_fini): Likewise.
	(doublebuf_blit_update_screen): Use pages.
	(grub_video_fb_doublebuf_blit_init): Likewise.
	(doublebuf_pageflipping_init): Allocate offscreen buffer.
	(doublebuf_pageflipping_update_screen): Use offscreen buffer.
	(grub_video_fb_setup): Prefer doublebuffing.

	guidelines.

	* grub-core/kern/dl.c (grub_dl_check_license): New function.
	(grub_dl_load_core): Use grub_dl_check_license.
	* include/grub/dl.h (GRUB_MOD_SECTION): New macro.
	(GRUB_MOD_LICENSE): Likewise.
	(GRUB_MOD_DUAL_LICENSE): Likewise.
	All modules updated.

	* grub-core/video/ieee1275.c (stdout_ihandle): New variable.
	(have_setcolors): Likewise.
	(grub_video_ieee1275_init): Fill stdout_ihandle and have_setcolors.
	(grub_video_ieee1275_setup): Use grub_video_ieee1275_set_palette.
	(grub_video_ieee1275_set_palette): Implement.