Some test code cleaning
HORNETQ-1217 junit4: log test starting and test finished.

Conflicts:
	hornetq-core-client/src/test/java/org/hornetq/tests/CoreUnitTestCase.java
HORNETQ-1217 HORNETQ-1209 jms/junit4: If a JMS test fails, stop all servers before next test.
HORNETQ-1217 Fix some new test cases (code changes generated by script)
https://bugzilla.redhat.com/show_bug.cgi?id=952651 - fixing XmlImportExportStressTest