[eclass] Update eclasses to support percona-server and do some more cleanup.
[dev-db/percona-server] Add percona-server to the overlay. This still needs much testing.
Currently fails to build with USE="embedded".
[eclass] Fix mytop dependencies.
Thanks to Brian Evans <grknight@lavabit.com> for noticing the issue.
Bump mysql-cluster to 7.2.8 and fix the old version unpack failure