Publish snapshots on successful commits

Wait.  Do we want to push on the 8 build?  I guess it's fine if we're doing -target 1.6 but still, I sort of feel better deploying something built on openjdk7.  Or do you think this is the least likely to pass, so it's the strictest constraint?

I wish we could have a post-matrix target so if the matrix is passing, do X. :/