Fixed over 500 compile warnings. Mostly:

* Unused variables.
* Missing newlines at ends of #included files.
* signed int loop variables where the termination condition is an unsigned 'get number of' function.
* 'NULL' used inappropriately for an integer or character constant (NULL is a pointer)
* abstract base classes with no virtual destructor.
* Floating point constants used to initialise integer variables.

Bullet/CollisionDispatch/CompoundCollisionAlgorithm.cpp

@@ -141,4 +141,6 @@ float	CompoundCollisionAlgorithm::CalculateTimeOfImpact(BroadphaseProxy* proxy0,
 	}
 	return hitFraction;
 
-}
+}
+
+