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/StridingMeshInterface.cpp

@@ -33,8 +33,6 @@ void	StridingMeshInterface::InternalProcessAllTriangles(InternalTriangleIndexCal
 	int stride,numverts,numtriangles;
 	int gfxindex;
 	SimdVector3 triangle[3];
-	int tempIndices[3] = {0,0,0};
-	int	graphicsindex=0;
 	float* graphicsbase;
 
 	SimdVector3 meshScaling = getScaling();