[thunderbird/f22] (7 commits) ...Update to 31.5.0

[Jan Horak]

Summary of changes:

  dc72805... Removed nss patch for epel (*)
  050b9f8... Fixed min nss version (*)
  f8b56df... Added fix for dictionaries (*)
  c93c3a7... Exclude ppc64 arch for epel builds (*)
  24ec389... update to 31.4.0 (*)
  2044185... Merge branch 'master' of ssh://pkgs.fedoraproject.org/thund (*)
  790eb40... Update to 31.5.0 (*)

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