PROTON-1869: Fix some SWIG Python Win64 type/pointer conversion problems
PROTON-1869: Fix some SWIG Python Win64 type/pointer conversion problems

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