Changelog

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+2009-11-30  Vladimir Serbinenko  <phcoder@gmail.com>
+
+       Agglomerate scrolling in gfxterm.
+
+       * term/gfxterm.c (grub_virtual_screen): New member 'total_screen'.
+       (grub_virtual_screen_setup): Initialise 'total_screen'.
+       (write_char): Split to ...
+       (paint_char): ... this ...
+       (write_char): ... and this.
+       (paint_char): Handle delayed scrolling.
+       (draw_cursor): Likewise.
+       (scroll_up): Split to ...
+       (real_scroll): ... this ...
+       (scroll_up): ... and this.
+       (real_scroll): Handle multi-line scroll and draw below-the-bottom
+       characters.
+       (grub_gfxterm_refresh): Call real_scroll.
+