[gtk] (5 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:

  12f500b... ci: Disable -Werror on all subprojects
  3c8aac3... testsuite: set GDK_DEBUG=default-settings unconditionally
  6a88617... gtk-launch: Fix unused variable warning on macOS
  02335c0... build: Turn off tautological-constant-out-of-range-compare 
  8f1750c... CI: turn on -Werror for MacOS build

Commits added to the branch:

  188e5fc... ci: Disable -Werror on all subprojects
  0d4d8f6... testsuite: set GDK_DEBUG=default-settings unconditionally
  4e49558... gtk-launch: Fix unused variable warning on macOS
  7bfce7c... build: Turn off tautological-constant-out-of-range-compare 
  4607e20... CI: turn on -Werror for MacOS build