PROTON-286: Windows hang: change blocking call to non-blocking when pending close count > 0

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1465858 13f79535-47bb-0310-9956-ffa450edef68
added assertions

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1466014 13f79535-47bb-0310-9956-ffa450edef68
removed hard coded recv arg from example

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1466535 13f79535-47bb-0310-9956-ffa450edef68
PROTON-160: make ~ routes work with send

git-svn-id: https://svn.apache.org/repos/asf/qpid/proton/trunk@1466547 13f79535-47bb-0310-9956-ffa450edef68