Branch a 2.3 release area, this will be the last 2.x release other than for bug fixes.  The trunk code is moving to 3.0 

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-cpp/branches/activemq-cpp-2.3@730537 13f79535-47bb-0310-9956-ffa450edef68