DISPATCH-2066: unblock Q2 on setting message receive complete
DISPATCH-2066: unblock Q2 on setting message receive complete

This closes #1247

kgiusti/dispatch,ChugR/qpid-dispatch,ChugR/qpid-dispatch,ErnieAllen/qpid-dispatch,apache/qpid-dispatch,ChugR/qpid-dispatch,ted-ross/qpid-dispatch,mgoulish/qpid-dispatch,ErnieAllen/qpid-dispatch,apache/qpid-dispatch,ChugR/qpid-dispatch,ErnieAllen/qpid-dispatch,ted-ross/qpid-dispatch,kgiusti/dispatch,ted-ross/qpid-dispatch,apache/dispatch,kgiusti/dispatch,ted-ross/qpid-dispatch,apache/qpid-dispatch,mgoulish/qpid-dispatch,mgoulish/qpid-dispatch,ErnieAllen/qpid-dispatch,mgoulish/qpid-dispatch,kgiusti/dispatch,mgoulish/qpid-dispatch,apache/qpid-dispatch,apache/qpid-dispatch,ted-ross/qpid-dispatch,ErnieAllen/qpid-dispatch,mgoulish/qpid-dispatch,kgiusti/dispatch,ChugR/qpid-dispatch,apache/dispatch,ErnieAllen/qpid-dispatch,apache/dispatch,ted-ross/qpid-dispatch,apache/dispatch,kgiusti/dispatch,apache/dispatch,apache/dispatch,apache/qpid-dispatch,apache/dispatch,ChugR/qpid-dispatch