fixing all-options build refs #3

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14477 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
added test for behavior at on-ramp

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14478 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
sorting roundabout themselves, too, not only their edges

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14479 29f149b2-0c63-11e1-8f5c-a347f6a9acd0