Update jetty version
[CXF-5539, CXF-5434] For JMS, don't create a back channel conduit if it's not needed.

Conflicts:
	rt/transports/jms/src/main/java/org/apache/cxf/transport/jms/JMSDestination.java
	systests/transport-jms/src/test/java/org/apache/cxf/systest/jms/JMSClientServerSoap12Test.java
Recording .gitmergeinfo Changes
Fix checkstyle issue and compile failure after merge
Remove a print in the tests
Fix a test hang