fix #1150

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@15613 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
making gDebugFlags truly global instead of MSGlobal refs #12

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@15614 29f149b2-0c63-11e1-8f5c-a347f6a9acd0