[nodejs] (3 commits) ...Merge branch 'f20' into f21

[T.C. Hollingsworth]

Summary of changes:

  f46f116... add Provides nodejs-punycode (RHBZ#1151811) (*)
  29e8916... Merge branch 'f19' into f20 (*)
  f0dfcde... Merge branch 'f20' into f21 (*)

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