added cf model tests for free and stopped flows

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@16840 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
added test for interesting edge case

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@16841 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
patching expected meso results refs #21

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@16842 29f149b2-0c63-11e1-8f5c-a347f6a9acd0