[fontforge/f17] (3 commits) ...Update to 20120731b

[Paul Flo Williams]

Summary of changes:

  df9e3ca... Rebuild for new libtiff. (*)
  db5fab8... - Rebuilt for https://fedoraproject.org/wiki/Fedora_18_Mass (*)
  c9eeeca... Update to 20120731b (*)

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