(ReadImage): lets get the offset right. This will let transparent gifs

(ReadImage): lets get the offset right. This will let transparent gifs

1999-10-30    <jrb@redhat.com>

	(ReadImage): lets get the offset right.  This will let transparent
	gifs work.

Right now, gifs with transparency, both interlaced and non-interlaced,
seem to work perfectly fine.  I haven't tried grayscale gifs yet, and I
seem to be getting offset in my RGB buffer with non-alpha gifs. )-:
This leads to pretty, but incorrect, images.

-Jonathan