have been replaced with the radius of the turn (since the
turn angle depends on the wheelbase of the kart). This way
the turning behaviour can be defined independent of the
kart physics.
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@2484 178a84e3-b1eb-0310-8ba1-8eac791a3b58