These ebuilds come from http://overlays.gentoo.org/proj/java.
If you have some problems, go to the official site first.
apgdiff : Another PostgreSQL Diff Tool is a simple PostgreSQL diff tool that is useful for schema upgrades. ( http://apgdiff.sourceforge.net/ )
db-je : Berkeley DB JE is a high performance, transactional storage engine written entirely in Java ( http://sleepycat.com/products/je.shtml )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org