no more gif problem + nice surprise

[Peter Mehlitz]

Alexandre Oliva wrote:
> it's the appropriate version.  Then we'll be able to drop the
> header-file-check hack, which we can't always trust anyway.  If
> there's no new function in libungif.so.4, we could perform the

Definitely. The right function would be DGifOpen, which is the specific thing
we need from the new libungif (the DGifOpenFile isn't used, anymore).

-- Peter