Add plane shape and profile timing support in examples/Collide

Use View/Profiler in example browser, in optimized build/Release mode
and look for plCollideWorld

examples/Collision/Internal/RealTimeBullet3CollisionSdk.h

@@ -18,6 +18,12 @@ public:
 	virtual void deleteCollisionWorld(plCollisionWorldHandle worldHandle);
 
 	virtual plCollisionShapeHandle createSphereShape(plCollisionWorldHandle worldHandle, plReal radius);
+	virtual plCollisionShapeHandle createPlaneShape(plCollisionWorldHandle worldHandle, 
+													plReal planeNormalX, 
+													plReal planeNormalY, 
+													plReal planeNormalZ, 
+													plReal planeConstant);
+
 	virtual void deleteShape(plCollisionWorldHandle worldHandle, plCollisionShapeHandle shape);
 	
 	virtual void addCollisionObject(plCollisionWorldHandle world, plCollisionObjectHandle object);