We now make sure in flight messages sent by STOMP producers are accepted by the broker before disconnecting the stomp connection.  This should improve flow control situations were producer send and disconnect over and over.

git-svn-id: https://svn.apache.org/repos/asf/activemq/activemq-apollo/trunk@1443061 13f79535-47bb-0310-9956-ffa450edef68