that now all coordinate systems are y up, z forwards - including
the file format. For now only one track has been ported, the
rest will follow shortly.
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@4985 178a84e3-b1eb-0310-8ba1-8eac791a3b58