add VS compiler options from https://github.com/hpicgs/glwhite

/MP, for faster compilation
/W4 for the moment, if not to annoying.
/AVX, should work on our machines =)
improve compiler speed for debug, fix warnings

using /LTCG with /GL only in release mode
suppress warnings according physx' runtime library linking
Merge pull request #3 from lanice/compiler_linker_config

add VS compiler options from https://github.com/hpicgs/glwhite