Add tribblix-vm and omnitribblix-vm

Homepage: http://tribblix.org/

Tribblix supports both amd64 and sparc. It has two variants: normal tribblix and omnitribblix.

The most useful thing of Tribblix compared to OmniOS and OpenIndiana is a tool named zap that makes system administration much easier. zap is both the name of the administration tool and the package manager. Tribblix packages are just compressed archives, making it much more lightweight compared to IPS.

Hi @neilpang, can you consider this?