Merge pull request #1278 from andytaylor/2.3.x

fixes ack problem where acks can slip in non xa on failover
2.3.8 release
revert to snapshot - next is 2.3.9
Merge pull request #1279 from clebertsuconic/2.3.x

release commit
https://bugzilla.redhat.com/show_bug.cgi?id=959641 - handle partial failure of ResourceAdapter start