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/CollisionShapes/PolyhedralConvexShape.h

@@ -28,7 +28,7 @@ class PolyhedralConvexShape : public ConvexShape
 public:
 
 	PolyhedralConvexShape();
-	
+
 	//brute force implementations
 	virtual SimdVector3	LocalGetSupportingVertexWithoutMargin(const SimdVector3& vec)const;
 	virtual void	BatchedUnitVectorGetSupportingVertexWithoutMargin(const SimdVector3* vectors,SimdVector3* supportVerticesOut,int numVectors) const;