MULE-7731 JMS transport should reuse javax.jms.Session, javax.jms.Messag...

...eProducer instances by default
This was never tested, and it almost certainly causes failures.  To be accurate the problem is with connectionFactoies that only support 1.0.2b, not with using setting 1.0.2b in Mule.  But given I found no way of querying the JMS spec version, it was simpler just to say that 1.0.2b isn't supported.