Merge branch 'ALF_CLEANUP' into 'master'

source/Lib/CommonLib/AdaptiveLoopFilter.cpp

source/Lib/CommonLib/AdaptiveLoopFilter.h

source/Lib/CommonLib/AlfParameters.h

source/Lib/CommonLib/CommonDef.h

source/Lib/CommonLib/Slice.h

source/Lib/CommonLib/TypeDef.h

source/Lib/CommonLib/x86/AdaptiveLoopFilterX86.h

source/Lib/DecoderLib/VLCReader.cpp

source/Lib/DecoderLib/VLCReader.h

source/Lib/EncoderLib/CABACWriter.cpp

source/Lib/EncoderLib/CABACWriter.h

source/Lib/EncoderLib/EncAdaptiveLoopFilter.cpp

source/Lib/EncoderLib/EncAdaptiveLoopFilter.h

source/Lib/EncoderLib/VLCWriter.cpp

source/Lib/EncoderLib/VLCWriter.h