Microsoft "Cuzz": Fault injection testing optimized to find concurrency flaws

Looks like it's internal-only right now, but that doesn't matter, because the idea is so simple OSS folks could duplicate this quickly: Cuzz deterministically messes up thread scheduling to increase the chance that you'll hit a race.

For a comparison with PetraVM's Jinx, see: http://petravm.com/blog/2009/11/comparing-cuzz-and-jinx/