XFree86 4.7.99.5 (9 November 2007)
  15. Do not free all Mesa buffers upon GLX extension closedown.  Instead these
      will be freed later, when FreeAllResources() is called to also free the
      drawable privates that reference these buffers.  Fixes Bugzilla #1685
      (Marc La France).
  14. Fix Mesa to complain (on stderr), rather than segfault, when an attempt
      is made to free an unknown buffer (Marc La France).
  13. Fix initialisation of __GLXscreenInfo structures (Marc La France).
  12. Fix memory leak and code formatting in RADEONProbe() function
      (Marc La France).