Merge branch 'remove_wpp_parallel' into 'master'

source/App/EncoderApp/EncApp.cpp

source/App/EncoderApp/EncAppCfg.cpp

source/App/EncoderApp/encmain.cpp

source/Lib/CommonLib/CodingStructure.cpp

source/Lib/CommonLib/CommonDef.h

source/Lib/CommonLib/Contexts.h

source/Lib/CommonLib/Picture.cpp

source/Lib/CommonLib/Picture.h

source/Lib/CommonLib/TypeDef.h

source/Lib/CommonLib/Unit.h

source/Lib/EncoderLib/CABACWriter.cpp

source/Lib/EncoderLib/EncCfg.h

source/Lib/EncoderLib/EncCu.cpp

source/Lib/EncoderLib/EncCu.h

source/Lib/EncoderLib/EncGOP.cpp

source/Lib/EncoderLib/EncLib.cpp

source/Lib/EncoderLib/EncLib.h

source/Lib/EncoderLib/EncReshape.cpp

source/Lib/EncoderLib/EncReshape.h

source/Lib/EncoderLib/EncSlice.cpp