WFLY-3246 Upgrade JGroups to 3.5.1.Final

https://issues.jboss.org/browse/WFLY-3246
Includes protocol stack tweaks, most notably:
* Uses new default transfer-queue bundler
* Use MERGE3 for tcp-based stack
* Disabling the infamous stdout messages from GMS.print_local_addr (WFLY-270)

Also, WFLY-3445 Allow custom protocol types in jgroups stack
https://issues.jboss.org/browse/WFLY-3445