QPID-5939: Add get_address to Perl Sender/Receiver classes.

Updated the Perl client/server examples.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1614889 13f79535-47bb-0310-9956-ffa450edef68
NO-JIRA: Perl Receiver returning an unwrapped Message object.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1614890 13f79535-47bb-0310-9956-ffa450edef68
QPID-5915: [Java Broker] Guard the case where client and server sides race to close the same connection.

This change reuses the approach taken by ConnectionRegistry when the Broker is shutdown.  Namely, it logs the failure
and continues to allow the Broker to shutdown.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1614893 13f79535-47bb-0310-9956-ffa450edef68