https://issues.apache.org/jira/browse/AMQCPP-449

Shutdown the Atomics last in case of no platform builtins to prevent segfault when a join on a Thread occurs in shutdown. 

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-cpp/trunk@1435309 13f79535-47bb-0310-9956-ffa450edef68