Update to latest polyglot to stay in step with Immutant.

This required a small change to the way destination start latches are
handled, since it is now possible to get a null latch if starting a
destination that was started outside of TorqueBox & Immutant.
Apply the McWhirter Sleep Principle (MSP) to try and make this integ more reliable
Increase how long job_timeout will block on a receive in case a full GC happens in the middle of this integ
Give clustered integs a bit more permgen
Use a CountDownLatch instead of sleep for jobs_timeout_spec
Longer timeout for durable_processor_spec integ
Specify sane permgen defaults in domain mode configs