trying to fix speed map test for linux, refs #21

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17531 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
fixing warnings and removing unused code, refs #12, #3

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@17532 29f149b2-0c63-11e1-8f5c-a347f6a9acd0