[libxc/f20] (9 commits) ...Update to 2.1.2.

[Susi Lehtola]

Summary of changes:

  b9735ef... ExcludeArch ppc and ppc64 on EPEL. (*)
  62c98f5... Workaround for EPEL. (*)
  75bc89c... Another try. (*)
  e9e52dd... Yet another try. (*)
  a3a8c92... Restore rhel conditional. (*)
  e1b97ab... - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass (*)
  a108e8e... - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_M (*)
  67cb243... Need to apply the ppc patch in epel7 too. (*)
  81ad2d3... Update to 2.1.2. (*)

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