Full build

Created by: myronmarston

This makes it easy to build against all supported rubies. I'm having issues running things on jruby but I think it's something in my environment that's messed up. I'm getting tons of spec failures on rubinius 1.1.1 so I didn't include it in the list (but you can easily add it once we get it passing). I'm also getting one cuke failures on 1.8.6--the version of flexmock used by a cuke has invalid syntax on 1.8.6.

If you want me to add this for the other repos, let me know. I figured we can start with this, and tweak to your liking before spending the time adding it to the others.