[gtk3] (6 commits) ...3.3.20

[Kalev Lember]

Summary of changes:

  c3b1dd1... 3.3.16 (*)
  a7d6b9e... fix file list (*)
  63cb46f... fix file lists (*)
  4e4c113... fix spec (*)
  8616af4... 3.3.18 (*)
  7f5e005... 3.3.20 (*)

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