Fix trailing white space, variable names, braces

source/App/BitstreamExtractorApp/BitstreamExtractorApp.cpp

source/App/DecoderApp/DecApp.cpp

source/App/DecoderApp/DecApp.h

source/App/EncoderApp/EncApp.cpp

source/App/EncoderApp/EncAppCfg.cpp

source/App/EncoderApp/EncAppCfg.h

source/App/SEIFilmGrainApp/SEIFilmGrainApp.cpp

source/App/StreamMergeApp/StreamMergeApp.h

source/Lib/CommonLib/CodingStructure.cpp

source/Lib/CommonLib/CodingStructure.h

source/Lib/CommonLib/Common.h

source/Lib/CommonLib/ContextModelling.h

source/Lib/CommonLib/Contexts.h

source/Lib/CommonLib/HRD.h

source/Lib/CommonLib/MotionInfo.h

source/Lib/CommonLib/Picture.cpp

source/Lib/CommonLib/SEI.h

source/Lib/CommonLib/SEIColourTransform.cpp

source/Lib/CommonLib/SEIFilmGrainSynthesizer.cpp

source/Lib/CommonLib/SEIFilmGrainSynthesizer.h