Some test code cleaning
HORNETQ-1217 junit4: log test starting and test finished.
HORNETQ-1217 HORNETQ-1209 jms/junit4: If a JMS test fails, stop all servers before next test.
tests: abstract classes don't need to be ignored.
Merge pull request #1121 from FranciscoBorges/junit4

Make JMS tests more robust against failures (+ some other commits)