Guard compile flags for MSVC
Guard compile flags for MSVC

Agadoul/DevIL,Agadoul/DevIL,DentonW/DevIL,DentonW/DevIL,Agadoul/DevIL,DentonW/DevIL,DentonW/DevIL,Agadoul/DevIL,DentonW/DevIL,Agadoul/DevIL,DentonW/DevIL,Agadoul/DevIL