Speedup:

Modified the resetScenegraph stuff which ran the bounding box and multipass actions too often. 
Now these traversals are only done once, resulting in a speedup of approximatly 4 for this part in updated Object and AddEmpty.


git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@15092 383ad7c9-94d9-4d36-a494-682f7c89f535