_MD4RotateVars
_MD4RotateVars(a, b, c, d);
_MD4RotateVars(a, b, c, d);
_MD4RotateVars(a, b, c, d);
_MD4RotateVars(a, b, c, d);
inline void _MD4RotateVars(uint32& a, uint32& b,