I couldn't find a good new HOMEPAGE for it, because it also seems to be outdated. The best I could find is the Debian page http://packages.debian.org/sid/libxcrypt1 which allows to download the sources. libxcrypt is needed for sys-auth/tcb, it would be nice to keep it in portage.
Created attachment 216196 [details] libxcrypt-2.4.ebuild Proposed ebuild. I made quite a lot of changes so I'm attaching the full file. If you don't object, I can commit it.
Bumped in CVS.