https://issues.jboss.org/browse/HORNETQ-1274 - support for single port
clear global nio thread pools on teardown
Merge pull request #1396 from andytaylor/master

single port stuff
https://bugzilla.redhat.com/show_bug.cgi?id=1032815 & https://issues.jboss.org/browse/HORNETQ-1284 - TokenBucket limiting per second now