Fix #1598: signal chroma location type when input is y4m

doc/software-manual.tex

source/App/DecoderApp/DecApp.cpp

source/App/EncoderApp/EncApp.cpp

source/App/EncoderApp/EncAppCfg.cpp

source/App/EncoderApp/EncAppCfg.h

source/Lib/CommonLib/SequenceParameterSet.h

source/Lib/CommonLib/TypeDef.h

source/Lib/DecoderLib/VLCReader.cpp

source/Lib/EncoderLib/EncCfg.h

source/Lib/EncoderLib/VLCWriter.cpp

source/Lib/Utilities/VideoIOYuv.cpp

source/Lib/Utilities/VideoIOYuv.h