deadlock tests were ignored for Firebird, in the actual test FB throws error code recognized as OperationTimeoutException, which is not processable at the moment. This led to infinite execution. Timeouts, introduced earlier, though partially help, but better to not allow them to be reached.
Reprocessing.Tests.Context is now disposable. Since AutoResetEvents are disposable they dispose before setting to null or in Context.Dispose method.