TS: Check clustering and compat and spec tests

Stuart Douglas:

1) Clustering tests do not run, and as they require a different arquillian adaptor they must not be in the same maven module as other integration tests.

2) Compat tests do not run correctly. Even though they have a different hibernate version specified in the profile, when attempting to run alongside other tests the hibernate version will be overriden. Also as this modifies a build time dependency test classes need to be re-compiled each run, to make sure they are built against the correct hibernate version.

I'll merge our changes into Stuart's branch since moving poms and scripts is easier than moving Clustering and Compat dirs back to their original location.