Disable SIMD operator overloads in Bullet (VS clang compile error).
Disable SIMD operator overloads in Bullet (VS clang compile error).

This is due to the more strict interpretation of the __m128 type by clang (as a base type rather than a struct).
As such, these operator overloads end up with no argument being a class (and C++ prohibits overloading operator+ and operator- for base types).

dariomangoni/chrono,rserban/chrono,rserban/chrono,projectchrono/chrono,Milad-Rakhsha/chrono,projectchrono/chrono,projectchrono/chrono,dariomangoni/chrono,rserban/chrono,Milad-Rakhsha/chrono,rserban/chrono,rserban/chrono,projectchrono/chrono,rserban/chrono,dariomangoni/chrono,projectchrono/chrono,projectchrono/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,Milad-Rakhsha/chrono,Milad-Rakhsha/chrono,dariomangoni/chrono,dariomangoni/chrono,rserban/chrono