QPID-5776 : Clean up sessions and links on AMQP 1.0 connection closing

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1612404 13f79535-47bb-0310-9956-ffa450edef68
QPID-5426 : Allow use of a URL for properties file initial context factory

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1612416 13f79535-47bb-0310-9956-ffa450edef68