2) Cleanup of old unused, and non-bullet code
3) Fixed wheelies, though they are currently still
disabled in the stk_config.data file since the
AI crashes with the new wheelie implementation.
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@1365 178a84e3-b1eb-0310-8ba1-8eac791a3b58