Also added a fix for proper update of animated meshes, as suggested by Reiko. This was missing from the recent update of improved selector usage and should now re-enable the proper handling of animated poses in selectors.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4001 dfc29bdd-3216-0410-991c-e03cc46cb475