[nodejs-proto-list/f19] (3 commits) ...restrict to compatible arches

[T.C. Hollingsworth]

Summary of changes:

  893e38a... add macro for EPEL6 dependency generation (*)
  2234859... invoke EPEL dependency generator macro conditionally to mak (*)
  1b69af5... restrict to compatible arches (*)

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