supertuxkart: 0.8-1~getdeb1

  * New upstream version (LP: #1089480)
    * Story mode and new challenge set
    * Improved AI
    * Skidding and better collision physics
    * Reverse mode
    * New green valley track
    * New Blackhill Mansion track
    * Updated XR591 track
    * Updated Fort Magma track
    * Updated jungle track
    * Updated menus
    * New music