added dispatch utility

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1633464 13f79535-47bb-0310-9956-ffa450edef68
PROTON-720: [Windows IO] fix format specifier to print string

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1633619 13f79535-47bb-0310-9956-ffa450edef68
PROTON-724: make sure to pop any pending output in pn_transport_close_head()

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1633863 13f79535-47bb-0310-9956-ffa450edef68
removed extraneous and harmful __str__

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1634078 13f79535-47bb-0310-9956-ffa450edef68
PROTON-728: don't try to settle the delivery, just abort the connection

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1634115 13f79535-47bb-0310-9956-ffa450edef68