fixing best lane update for traci stops

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17087 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
adapting output to new prelook and best lanes, refs #21

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17088 29f149b2-0c63-11e1-8f5c-a347f6a9acd0