PROTON-1514: check for settled flag on all frames of multi-frame transfer; enforce sole legal transition is settled to unsettled
PROTON-1514: check for settled flag on all frames of multi-frame transfer; enforce sole legal transition is settled to unsettled

gemmellr/qpid-proton,kgiusti/qpid-proton,alanconway/qpid-proton,ssorj/qpid-proton,alanconway/qpid-proton,ssorj/qpid-proton,kgiusti/qpid-proton,apache/qpid-proton,ssorj/qpid-proton,apache/qpid-proton,astitcher/qpid-proton,alanconway/qpid-proton,ChugR/qpid-proton,ssorj/qpid-proton,gemmellr/qpid-proton,gemmellr/qpid-proton,alanconway/qpid-proton,kgiusti/qpid-proton,ChugR/qpid-proton,astitcher/qpid-proton,astitcher/qpid-proton,kgiusti/qpid-proton,kgiusti/qpid-proton,astitcher/qpid-proton,alanconway/qpid-proton,ChugR/qpid-proton,gemmellr/qpid-proton,ssorj/qpid-proton,kgiusti/qpid-proton,ChugR/qpid-proton,ChugR/qpid-proton,apache/qpid-proton,apache/qpid-proton,ChugR/qpid-proton,apache/qpid-proton,gemmellr/qpid-proton,astitcher/qpid-proton,astitcher/qpid-proton,ssorj/qpid-proton,apache/qpid-proton,alanconway/qpid-proton,gemmellr/qpid-proton