Merge pull request #1271 from clebertsuconic/2.3.x

https://bugzilla.redhat.com/show_bug.cgi?id=1006807 - update JGroups
https://bugzilla.redhat.com/show_bug.cgi?id=988706 - fixes ack problem where acks can slip in non xa on failover
Merge pull request #1278 from andytaylor/2.3.x

fixes ack problem where acks can slip in non xa on failover