[mdadm] (4 commits) ...Fix two IMSM bugs

[Jes Sorensen]

Summary of changes:

  14c7631... Try to resolve cgroup issue (*)
  ecbec5e... Fix build issue with cgroups workaround patch (*)
  d631ead... Only apply cgroups workaround on Fedora 18 and higher (*)
  bbba7e0... Fix two IMSM bugs (*)

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