Revision 1228960 seems to break parallel tests.
before: Call to super.getRunner returns a ParentRunner that ConfigurableParallelComputer.getRunner passes directly to parallelize
after: Call to super.getRunner returns a ParentRunner, but ConfigurableParallelComputer.getRunner wraps that ParentRunner in a ClassDemarcatingRunner which it then passes to parallelize
problem: Parallelize calls setScheduler (and therefore parallelizes the tests) only for ParentRunners. Since the ParentRunner of interest is wrapped inside the ClassDemarcatingRunner, which is not a ParentRunner, parallelize does not call setScheduler.