A couple comment changes and variable renames
Fix this fragile unit test.  Also made the call to stop updating the clock automatically block until the thread which updates the clock is ensured to stop
These unit tests were not correct, we should be calling shutdownNow in order to verify like this
Put a delay of 1 millisecond here, in case we have a slow system timer, to ensure that the shutdown task goes after all currently scheduled tasks.
Added ability to get a count of how many runnables/callables are scheduled or awaiting execution
Start of a threadly implementation of a thread profiler
This class does not really belong in testing.  Concurrent is not even the best match for it, but for not it seems a lot better than the test package.

I also updated it so that it is returning the ListenableFuture.
Expansion to this javadoc
Making this default a little tigher of a loop
Fix for a possible intermitten unit test failure
Another unit test that is failing on occasion, now fixed
More unit test coverage...pretty minor, but worth the easy to add improvement
Two additional negative case unit tests
Merge branch 'master' into thread_profiler
Start of a simple unit test for this class
More functionality around writing stack traces, making it a bit more convienent if you already have a StringBuffer/StringBuilder/Writer that your using.
Change this to use Clock in case people are relying on this function to advance the Clock abstraction
Merge branch 'master' into thread_profiler
This fixes #43.  The issue was that when the park was being called, the thread had already been interrupted, thus making the park return immediately.  I went ahead and improved a few other places where we can be handling interrupted exceptions a lot better.
Fix for possibly leaking a submitted job due to the recent fix for #42.  By letting the interrupted worker get back into the pool, it could have recieved a job right before it killed itself.  This also fixes a very rare condition that could cause a duplicate decrement of the current pool size (thus making it think that the pool is smaller than it actually is)