GifLib 3.1?

I just realized my build of XEmacs 21.0b46 doesn't grok GIF, most likely because (as configure --help sez) I don't have "GifLib 3.1 or greater". Contrary to the help docs, the XEmacs FTP site does *not* appear to have GifLib 3.1. Doing a Websearch for GifLib, I've only been able to find GifLib 3.0 at Eric Raymond's site: <http://sagan.earthspace.net/~esr/giflib/> a.k.a. <http://www.ccil.org/esr/giflib/> Before I go and download and build 3.0, I just want to know if 3.0 will work, and if not, where I can get 3.1 from. (You can also take this message as a gentle reminder to the person maintaining the XEmacs aux directory that the appropriate GifLib needs to be uploaded there ;-). Thanks, -Barry