implementing new bt detection probability, refs #1499

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17340 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
adapting bt test outputs, refs #21, fixes #1499

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17341 29f149b2-0c63-11e1-8f5c-a347f6a9acd0