Fix!36: add Shutter Interval SEI message processing constrain and warning info

Merge branch 'SII_SEI_Process' of https://vcgit.hhi.fraunhofer.de/tlu/HM into SII_SEI_Process

# Conflicts:
#	source/App/TAppDecoder/TAppDecTop.cpp
#	source/App/TAppEncoder/TAppEncCfg.cpp
#	source/Lib/TLibEncoder/TEncCfg.h