extensions fixed, refs #1138

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@15512 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
enumerations stub, refs #1138

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@15513 29f149b2-0c63-11e1-8f5c-a347f6a9acd0