HORNETQ-1114 listMessagesAsJSON and countMessages JMX methods do not include paged messages

 Added a totalIterator() to iterate a queue's messages including those in the paging store.
Merge pull request #916 from gaohoward/Branch_2_2_EAP

HORNETQ-1114 listMessagesAsJSON and countMessages JMX methods do not inc...
Merge pull request #917 from clebertsuconic/Branch_2_2_EAP

fixing test that are failing after topic=null change
Merge pull request #920 from clebertsuconic/Branch_2_2_EAP

another test fix avoiding NPE on queue
changing version to JBPAPP-10460
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