findbugs: make inner class static
findbugs: remove dead code
findbugs: fix toString() on array
findbugs: replace StringBuffer by StringBuilder
https://issues.jboss.org/browse/HORNETQ-1115 - Shared subscriptions on MDBs
HORNETQ-1117 - prevention of races during XA protocol
Merge pull request #792 from clebertsuconic/master

shared subscription and preventing XA weird race
Merge pull request #795 from FranciscoBorges/master

Fix a number of findbugs warnings
javadoc
HORNETQ-720 Persist the record ID from live to backup in case of orderly shutdown.
HORNETQ-966 Compact journals before replication synchronization
Move some "description only" code from JournalStorageManager to DescribeJournal
Test fails sporadically. So if it fails, we need to assess the journal's state.