Use gdk_window_invalidate_rect instead of gdk_window_invalidate_rect_clear

Use gdk_window_invalidate_rect instead of gdk_window_invalidate_rect_clear

2001-01-15  Alexander Larsson  <alexl@redhat.com>

	* gdk/linux-fb/gdkwindow-fb.c:
	Use gdk_window_invalidate_rect instead of
	gdk_window_invalidate_rect_clear to minimise flashing.
	When hiding windows you need to clear the root window though.