JVET-AA0062: BVD for IBC with IBC flipping (EE2-3.3)

source/App/EncoderApp/EncApp.cpp

source/App/EncoderApp/EncAppCfg.cpp

source/App/EncoderApp/EncAppCfg.h

source/Lib/CommonLib/Buffer.cpp

source/Lib/CommonLib/Buffer.h

source/Lib/CommonLib/CommonDef.h

source/Lib/CommonLib/ContextModelling.cpp

source/Lib/CommonLib/ContextModelling.h

source/Lib/CommonLib/Contexts.cpp

source/Lib/CommonLib/Contexts.h

source/Lib/CommonLib/IbcHashMap.cpp

source/Lib/CommonLib/IbcHashMap.h

source/Lib/CommonLib/InterPrediction.cpp

source/Lib/CommonLib/InterPrediction.h

source/Lib/CommonLib/IntraPrediction.cpp

source/Lib/CommonLib/MotionInfo.h

source/Lib/CommonLib/RdCost.cpp

source/Lib/CommonLib/RdCost.h

source/Lib/CommonLib/Slice.cpp

source/Lib/CommonLib/Slice.h