[fotoxx/f18] (4 commits) ...Rebase pthread library link patch to new version

[Pavel Alexeev]

Summary of changes:

  b4b7b3c... Updated to new version by mail request from Eduardo Jorge. (*)
  49664db... Bump gtk dep to gtk-3 (*)
  46f6326... Rebase pthread library link patch to new version (*)
  f14243e... Rebase pthread library link patch to new version (*)

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