[grub2/f17] (4 commits) ...Update for newer autotools and gcc 4.7.0

[Peter Jones]

Summary of changes:

  c07e9a4... ExcludeArch s390*, which is not supported by this package.  (*)
  62a7c9b... Add /etc/sysconfig/grub link to /etc/default/grub (*)
  06628ab... Merge branch 'master' of ssh://pkgs.fedoraproject.org/grub2 (*)
  645dc62... Update for newer autotools and gcc 4.7.0 (*)

(*) This commit already existed in another branch; no separate mail sent