Merge pull request #1268 from jbertram/master

Quick doc update
fixing code on HornetQClusterSecurityException - matching with 2.3.x
Merge pull request #1270 from clebertsuconic/master

fixing code on HornetQClusterSecurityException - matching with 2.3.x
Aligning JGropus with the version used at Wildfly/master
Merge pull request #1272 from clebertsuconic/master

Aligning JGropus with the version used at Wildfly/master
xslt to output debug information about the XSLT processor.

It would have helped to track down the problem with Fedora.
Set <transformerFactory/> on net.sf.saxon.TransformerFactoryImpl.
Merge pull request #1276 from FranciscoBorges/schema

Set transformerFactory for maven XSLT plugin.
https://bugzilla.redhat.com/show_bug.cgi?id=988706 - fixes ack problem where acks can slip in non xa on failover
Merge pull request #1277 from andytaylor/master

fixes ack problem where acks can slip in non xa on failover
Test-case to demonstrate problem