Merge pull request #1758 from jbertram/2.3.x

HORNETQ-1372 & BZ1113908 - TopicControl.listDurableSubscriptionsAsJSON d...
HORNETQ-1389 : JGroupsBroadcastGroupConfiguration Serialization Problem
Merge pull request #1767 from gaohoward/2.3.x_HORNETQ-1389

HORNETQ-1389 : JGroupsBroadcastGroupConfiguration Serialization Problem
HORNETQ-1388 - The returnBlocking() method should propagate the exception in the fail method or RemotingConnection.