Attempts to improve performance. Not much gain yet, but good to experiment what has effect and what hasn't.

Added 'DO_BENCHMARK_PYRAMID' to CcdPhysicsDemo.

Demos/CcdPhysicsDemo/CcdPhysicsDemo.h

@@ -28,6 +28,7 @@ class CcdPhysicsDemo : public DemoApplication
 
 	virtual void displayCallback();
 	
+	void createStack( btCollisionShape* boxShape, float halfCubeSize, int size, float zPos );
 	
 };