Fixed warnings in Bullet/src core library

Thanks Martijn Reuvers from Two Tribes B.V. (www.twotribes.com) for the patch

To make this work more visible, suppress warnings in external libraries in Extras (COLLADA_DOM, libxml and glui contain many warnings)
Added PreprocessorDefinitions: _CRT_SECURE_NO_DEPRECATE;_CRT_NONSTDC_NO_DEPRECATE to vcproj files

src/LinearMath/btAlignedAllocator.h

@@ -35,7 +35,7 @@ void*	btAlignedAllocInternal	(size_t size, int alignment,int line,char* filename
 void	btAlignedFreeInternal	(void* ptr,int line,char* filename);
 
 #else
-	void*	btAlignedAllocInternal	(size_t size, int alignment);
+void*	btAlignedAllocInternal	(std::size_t size, int alignment);
 	void	btAlignedFreeInternal	(void* ptr);
 
 	#define btAlignedAlloc(a,b) btAlignedAllocInternal(a,b)