Merging r6383 through r6403 from trunk to ogl-es branch

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6404 dfc29bdd-3216-0410-991c-e03cc46cb475

include/ISceneCollisionManager.h

@@ -30,7 +30,7 @@ namespace scene
 		core::triangle3df Triangle;
 
 		//! Triangle selector which contained the colliding triangle (useful when having MetaTriangleSelector)
-		ITriangleSelector* TriangleSelector;
+		const ITriangleSelector* TriangleSelector;
 
 		//! Node which contained the triangle (is 0 when selector doesn't have that information)
 		ISceneNode* Node;