Initial version of JVET-N0438:Loop filter disabled across virtual boundaries

source/App/EncoderApp/EncApp.cpp

source/App/EncoderApp/EncAppCfg.cpp

source/App/EncoderApp/EncAppCfg.h

source/Lib/CommonLib/AdaptiveLoopFilter.cpp

source/Lib/CommonLib/AdaptiveLoopFilter.h

source/Lib/CommonLib/LoopFilter.cpp

source/Lib/CommonLib/LoopFilter.h

source/Lib/CommonLib/SampleAdaptiveOffset.cpp

source/Lib/CommonLib/SampleAdaptiveOffset.h

source/Lib/CommonLib/Slice.cpp

source/Lib/CommonLib/Slice.h

source/Lib/CommonLib/TypeDef.h

source/Lib/CommonLib/x86/AdaptiveLoopFilterX86.h

source/Lib/DecoderLib/DecLib.cpp

source/Lib/DecoderLib/VLCReader.cpp

source/Lib/DecoderLib/VLCReader.h

source/Lib/EncoderLib/EncAdaptiveLoopFilter.cpp

source/Lib/EncoderLib/EncAdaptiveLoopFilter.h

source/Lib/EncoderLib/EncCfg.h

source/Lib/EncoderLib/EncLib.cpp