creating the world (which might give a performance boost).
2) Moved ssg_help into utils directory, added a namespace,
and changed parameters to use Vec3 (instead of 3 floats).
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@2279 178a84e3-b1eb-0310-8ba1-8eac791a3b58