[gtk] (7 commits) Non-fast-forward update to branch macos-ci

[Matthias Clasen <matthiasc src gnome org>]

The branch 'macos-ci' 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:

  3d81f6e... ci: Add a macos build
  d7aaa5d... printing: cairo-pdf is needed
  aabf678... printing: Remove cairo header checks
  22cdee5... ci: Fix the harfbuzz build on MacOS
  3b387b1... ci: Disable pixman tests on MacOS
  03c7650... Fix the cairo build on OS X
  f3d4454... Pass coretext=enabled to harfbuzz

Commits added to the branch:

  02ccc4b... ci: Add a macos build
  2e3d689... printing: cairo-pdf is needed
  96bac5c... printing: Remove cairo header checks
  5db1d66... ci: Fix the harfbuzz build on MacOS
  385e86e... ci: Disable pixman tests on MacOS
  78563b7... Fix the cairo build on OS X
  3d61d78... Pass coretext=enabled to harfbuzz