This package is still under development, but the API
appears to have settled to the point where it's reasonable
to write applications with it.
This source tree is available via anonymous CVS:
cvs -d :pserver:anoncvs@elvis.redhat.com:/usr/local/CVS login
cvs -d :pserver:anoncvs@elvis.redhat.com:/usr/local/CVS co libuser
The password is "anoncvs".