+ Fix btSubsimplexConvexCast

Thanks to Nacho, http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&t=2422)
Fix in rendering, GL_STENCIL
+ btTriangleIndexVertexArray indices should be unsigned int/unsigned short int,
+ Made InternalProcessAllTriangles virtual, thanks to 
Both thank to Fullmetalcoder, http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&t=2401
+clamp impulse for btPoint2PointConstraint
Thanks to Martijn Reuvers, http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&t=2418
+ Free memory of bvh, pass in scaling factor (optional)
Thanks to Roy Eltham, http://www.bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&t=2375

Demos/OpenGL/DemoApplication.cpp

@@ -599,6 +599,8 @@ btVector3	DemoApplication::getRayTo(int x,int y)
 	return rayTo;
 }
 
+btScalar mousePickClamping = 3.f;
+
 
 void DemoApplication::mouseFunc(int button, int state, int x, int y)
 {
@@ -686,6 +688,8 @@ void DemoApplication::mouseFunc(int button, int state, int x, int y)
 								btVector3 localPivot = body->getCenterOfMassTransform().inverse() * pickPos;
 
 								btPoint2PointConstraint* p2p = new btPoint2PointConstraint(*body,localPivot);
+								p2p->m_setting.m_impulseClamp = mousePickClamping;
+
 								m_dynamicsWorld->addConstraint(p2p);
 								m_pickConstraint = p2p;
 								
@@ -965,6 +969,8 @@ for(int i=0;i<numObjects;i++)
 //
 void DemoApplication::renderme()
 {
+	myinit();
+
 	updateCamera();
 
 	if (m_dynamicsWorld)