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/ConvexBuilder.cpp

@@ -8,6 +8,10 @@
 #include "fitsphere.h"
 #include "bestfitobb.h"
 
+unsigned int MAXDEPTH = 8 ;
+float CONCAVE_PERCENT = 1.0f ;
+float MERGE_PERCENT   = 2.0f ;
+
 CHull::CHull(const ConvexResult &result)
 {
 	mResult = new ConvexResult(result);
@@ -147,8 +151,6 @@ CHull * ConvexBuilder::canMerge(CHull *a,CHull *b)
 	if (!tcount)
 		return 0;
 
-	unsigned int *idx   = &indices[0];
-
 	HullResult hresult;
 	HullLibrary hl;
 	HullDesc   desc;