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.

Extras/ConvexDecomposition/meshvolume.cpp

@@ -43,7 +43,6 @@ float computeMeshVolume(const float *vertices,unsigned int tcount,const unsigned
 {
 	float volume = 0;
 
-	const float *p0 = vertices;
 	for (unsigned int i=0; i<tcount; i++,indices+=3)
 	{