Under high load JMS in/out provider fails to receive responses.

Under high load JMS in/out provider fails to receive responses. It is a threading problem in JMS provider in/out exchange processing while doing template.receiveSelected() call to receive messages. This happens in a scenario where servicemix-jms consumer has more than 1 concurrent consumers (saw the problem with 5 concurrent consumer with 100 message and atleast 1 message being lost).

I will attach a patch to resolve this shortly.