2004-01-18  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpimage.[ch] (gimp_image_get_color): also return the
	color's alpha byte if it has alpha, not only the converted RGB
	values.  Return OPAQUE_OPACITY for drawables without alpha.
	Fixes bug #131706.

	* app/core/gimpdrawable.c (gimp_drawable_get_color_at)
	* app/core/gimpimage-contiguous-region.c
	(gimp_image_contiguous_region_by_color)
	* app/core/gimpimage-projection.c (gimp_image_projection_get_color_at)
	* app/core/gimpimagemap.c (gimp_image_map_get_color_at)
	* app/paint/gimpclone.c (gimp_clone_line_image): removed separate
	handling of the alpha byte from all users of gimp_image_get_color().