[qt5-qtbase] (5 commits) ...Merge branch 'master' into f20

[Rex Dieter]

Summary of changes:

  c18de56... backport the qatomic/ppc patch (*)
  d68ca2e... remove ppc/ppc64 exclusion (*)
  6d3bf7e... Revert "remove ppc/ppc64 exclusion" (*)
  780dd8b... Revert "backport the qatomic/ppc patch" (*)
  df5da79... Merge branch 'master' into f20 (*)

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