refactoring refs #12

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17522 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
added script for computing route length statistics

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17523 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
added script for counting the number of lane changes. This is a lower bound since lane changes might also occur while changing an edge and these cannot be reliably detected from a netstate-dump

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17524 29f149b2-0c63-11e1-8f5c-a347f6a9acd0