[packages/readline] (4 commits) ...always define patchset, use patchlevel 0 if there are no patches

[glen]

Summary of changes:

  3209ae2... move upstream patches to distfiles; actually apply the patc (*)
  9ca6efd... Merge branch 'df' (*)
  4a3b205... move upstream patches to distfiles (*)
  c18f920... always define patchset, use patchlevel 0 if there are no pa (*)

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