'Think Different': enabled some demos to compile for OS X -i386

Demos/ColladaDemo/ColladaDemo.cpp

@@ -111,7 +111,14 @@ float bulletSpeed = 40.f;
 #ifdef WIN32 //needed for glut.h
 #include <windows.h>
 #endif
+//think different
+#if defined(__APPLE__) && !defined (VMDMESA)
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#include <GLUT/glut.h>
+#else
 #include <GL/glut.h>
+#endif
 #include "GL_ShapeDrawer.h"
 
 #include "GlutStuff.h"