+ fixed btMinkowskiSumShape Sa+b(v) = Sa(v)-Sb(-v) instead of Sa(v)+Sb(v)

+ fix related btMinkowskiSumShape issue in btSubsimplexConvexCast and btGjkConvexCast
+ add hitpoint for btSubsimplexConvexCast
+ reduce maximum number of iterations in conservative advancement/CCD implementations

Demos/Raytracer/Raytracer.cpp

@@ -101,6 +101,7 @@ void	Raytracer::initPhysics()
 	{
 		transforms[i].setIdentity();
 		btVector3	pos(0.f,0.f,-(2.5* numObjects * 0.5)+i*2.5f);
+		transforms[i].setIdentity();
 		transforms[i].setOrigin( pos );
 		btQuaternion orn;
 		if (i < 2)