[nss/f20] (4 commits) ...Merge branch 'master' into f20

[Elio Maldonado]

Summary of changes:

  f37654e... Bump the release tag (*)
  4f65550... Update to nss-3.15.3.1 (hg tag NSS_3_15_3_1_RTM) (*)
  b556786... - Resolves: Bug 1040192 - nss-3.15.3.1 is available (*)
  7b557ce... Merge branch 'master' into f20

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