[WFLY-3788]:Upgrade org.apache.httpcomponents:httpclient to 4.3.2
[WFLY-3711] Re-instate sendClusterRemoved message in VersionOneProtocolChannelReceiver to clean up ClusterContext
[WFLY-3751] JGroups UNICAST protocol cannot be used, timeout property has been deprecated and has no effect
Drop all jgroups protocol defaults that we are not actively using in any of the stacks
Avoid NPE, raise a warning about the UnknowHost
Use more restrictive filter in External TLD scanning to improve performance
WFLY-817 Destroy non-clustered SFSB's on undeploy
Merge pull request #6650 from stuartwdouglas/external-tlds

Use more restrictive filter in External TLD scanning to improve performa...
Merge pull request #6648 from langfr/NPE_MailService
Merge pull request #6642 from jimma/master
Merge pull request #6637 from stuartwdouglas/WFLY-817
Merge pull request #6622 from rhusar/WFLY-3751
Fix intermittent failure in DB timers test

This is caused by the InitialContext being garbage collected while the connection is still in use
WFLY-3797 undertow.xml contains wrong Wildfly version
WFLY-2770 Enable CDI decorators for web socket endpoints
Remove dangerous connection parameter change from the pooled connection.
Add initial datasource check for the appropriate transaction isolation, run the timer update within a transaction to ensure consistency.
Add dialect autodetection for timer databases to prevent from the necessity of configuration.
Add specific SQL statements to support Oracle and MySQL for EJB-Timer persistence
WFLY-1227 Add graceful shutdown support for EJB timers
Testcase for WFLY-3779
WFLY-3779 IllegalAccessException when a built-in normal-scoped bean defines a package-private no-arg constructor