Reverting -with-frame-pointers
    
    Fails to compile alt-ergo without frame-pointers. No time to debug
    before tonight, so I revert and will merge again after fixing the
    problem.
    
    
    
    git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13732 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02