Message 300516 - Python tracker

> Example:
>
> 10-STABLE-amd64% ./python -m test -v test_logging --fail-env-changed -F -m test.test_logging.DatagramHandlerTest.test_output -m test.test_logging.ConfigDictTest.test_listen_config_10_ok  --match=test.test_logging.SocketHandlerTest.test_output

Oh, I forgot to mention that I also run "./python -m test -j4" in a different terminal in parallel to make the bug more likely.