I committed a version of this that uses Raymond's suggestion and also makes sure that the first thread is named Thread-1 as it has been in the past (there was a test failure without that fix, but I also think it makes sense for it to be Thread-1 since one would normally think of the main thread as thread 0).

I did not try to turn the test script into a test case because it would take a long time to run if it is to have a reasonable chance of displaying the bug, and it would never be a consistent failure.

Thanks, Peter; sorry it took so long to get this committed.