added hierarchical profiling (needs more cleanup)

avoid dynamic allocations in btRaycastVehicle

Demos/BasicDemo/BasicDemo.cpp

@@ -104,9 +104,6 @@ void BasicDemo::clientMoveAndDisplay()
 void BasicDemo::displayCallback(void) {
 
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 
-
-	if (m_dynamicsWorld)
-		m_dynamicsWorld->updateAabbs();
 	
 	renderme();