[gtk] (16 commits) Non-fast-forward update to branch wip/otte/macos-werror

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/macos-werror' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  7f8f59d... CI: turn on -Werror for MacOS build
  2ffff27... gtk-launch: Remove compile-time warning
  9d4ba26... glcontext: Avoid gcc warning on non-egl build
  b97260f... reftests: Remove GTK3 setting
  f6772d4... ci: Disable -Werror on all subprojects
  8a9ea21... testsuite: set GDK_DEBUG=default-settings unconditionally
  51c96fc... gtk-launch: Fix unused variable warning on macOS
  88bd108... build: Turn off tautological-constant-out-of-range-compare 
  0c06343... CI: turn on -Werror for MacOS build
  ebcef9f... macos: Run the testsuite

Commits added to the branch:

  c125ffb... Merge branch 'wip/otte/for-master' into 'master' (*)
  c4df987... combobox: Make combo box activatable (*)
  3918cdd... dropdown: Make DropDown activatable (*)
  0aa3a7e... combo_box: Use mnemonic_activate on override (*)
  df12a41... testsuite: Set GDK_DEBUG unconditionally (*)
  97365a8... reftest: Stop setting GDK_RENDERING (*)
  e017e42... reftest: No blinking, please (*)
  9a31922... Merge branch 'reftest-no-blink' into 'master' (*)
  8c63244... Merge branch 'activate-signal-dropdown-combobox' into 'mast (*)
  68592ed... gtk-launch: Remove compile-time warning
  1333686... glcontext: Avoid gcc warning on non-egl build
  144d571... ci: Disable -Werror on all subprojects
  b373b18... gtk-launch: Fix unused variable warning on macOS
  fc229f9... build: Turn off tautological-constant-out-of-range-compare 
  a0c7f7f... CI: turn on -Werror for MacOS build
  c958c57... macos: Run the testsuite

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