Hi there !!!
Well unfortunately the server is down or something as I cannot get the sources of xforms also...
The option you have is to search your distribution packages for xforms binaries, you will need to download and/or install xforms and xforms-devel packages in order to compile jazip. Try to search
for rpms for your distro also.
Apparently SuSE 9.3 doesn't include xforms anymore so I can't compile jazip on my laptop.
About the "glibc" libraries, don't download and use the ones mentioned there, use your distribution's instead, just make sure you have the "devel" packages and you should be fine.
Hope this helps ya.