updating some test networks, refs #21

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@15766 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
randomTrips now recognizes fringe-edges even if they have turnarounds

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@15767 29f149b2-0c63-11e1-8f5c-a347f6a9acd0