Build OCC 7.9 by VS2019

Source Code Dir: D:/OpenCASCADE-7.9.0-vc14-64/OCCT-7_9_0
Build Path : D:/OpenCASCADE-7.9.0-vc14-64/Build/VS2019
3RDParty_Dir : d:/OpenCASCADE-7.9.0-vc14-64/3rdparty-vc14-64
Install Dir : d:/OpenCASCADE-7.9.0-vc14-64/Install