[gtk/matthiasc/for-master] (15 commits) ...dropdown: Style fixups

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  ceb2349... Merge branch 'matthiasc/for-master' into 'master' (*)
  9c5a9fb... Update Basque translation (*)
  5e69181... Update Basque translation (*)
  72c72d0... Fix the lpr print backend build (redundant-decls) (*)
  b046c8d... spinbutton: Bring back auto-sizing (*)
  4e5689a... Merge branch 'tchaik/fix-lpr-build' into 'master' (*)
  85d822b... Fix various compiler warnings with the 64bit mingw build (*)
  f16b34f... CI: Switch to 64bit mingw for the MSYS2 job (*)
  d9d591f... Merge branch 'fix-spin-button-auto-sizing' into 'master' (*)
  131cc64... Merge branch 'mingw-x64-compiler-warnings' into 'master' (*)
  c49318e... Update Ukrainian translation (*)
  9c5d6ea... frame clock: adjust reported frame time (*)
  887aa2a... frame clock: fix scheduling (*)
  1443ef8... Merge branch 'final-frame-clock-work' into 'master' (*)
  cf2d6f6... dropdown: Style fixups

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