bug 962264/HORNETQ-1193 : upgrade netty to 3.6.6
Also related to bug: https://bugzilla.redhat.com/show_bug.cgi?id=899916
Merge pull request #1070 from gaohoward/2.3.x

bug 962264/HORNETQ-1193 : upgrade netty to 3.6.6
https://bugzilla.redhat.com/show_bug.cgi?id=917045 - fixed exception handling
Merge pull request #1079 from andytaylor/2.3.x

https://bugzilla.redhat.com/show_bug.cgi?id=917045 - fixed exception handling
HORNETQ-1202 Fix crash on concurrent modifications. Notice that just making 'matches' a ConcurrentHashMap does not solve it.
https://bugzilla.redhat.com/show_bug.cgi?id=964129

We could have a race between the state of matches and the cache:
Thread1: addMatch(): i. clean cache; ii. add match to Map
Thread2: could add an (outdated) entry to the cache between 'i. clean cache' and
'ii. add match to Map'.
Merge pull request #1082 from FranciscoBorges/2.3.x

HORNETQ-1202 Fix crash on concurrent modifications. Notice that just making 'matches' a ConcurrentHashMap does not solve it. https://bugzilla.redhat.com/show_bug.cgi?id=964129
https://bugzilla.redhat.com/show_bug.cgi?id=965826 / https://issues.jboss.org/browse/HORNETQ-1211