[js/f18] (2 commits) ...make sure -march=armv7-a is not hardcoded in arm builds

[Dennis Gilmore]

Summary of changes:

  9e49031... Thanks to Ville Skyttä (bz#875343) build against libedit i (*)
  3c9b053... make sure -march=armv7-a is not hardcoded in arm builds (*)

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