fixing svn props, refs #22

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14718 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
building the tree once is enough...

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14719 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
externalising geometry helper methods used in bt

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@14720 29f149b2-0c63-11e1-8f5c-a347f6a9acd0