[expresso/el6] (5 commits) ...Merge branch 'master' into el6

[Jamie Nguyen]

Summary of changes:

  8071e3d... Restrict to compatible arches (*)
  3ca734a... - Rebuilt for https://fedoraproject.org/wiki/Fedora_20_Mass (*)
  a456c55... Add ExclusiveArch logic (*)
  96d4685... Revert "Restrict to compatible arches" (*)
  64c7ac9... Merge branch 'master' into el6 (*)

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