Benp/paver tests

@clytwynec @muhammad-ammar 

Could you take a look?

I'm leaving out the subdir problem as that's something we're still vetting out. Note as well that we are not looking at coverage of paver right now; that's still going to be ignored at this point.

Ben

This will make the tests run with the test_lib command.  Do we want them to always run that way or should it be separate?