[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:

  a327d18... ci: Add a macos build
  0ce2e3f... printing: cairo-pdf is needed
  e006731... printing: Remove cairo header checks
  5693fb4... ci: Fix the harfbuzz build on MacOS
  0cf83e8... ci: Disable pixman tests on MacOS
  62d5671... Fix the cairo build on OS X
  da45839... Pass coretext=enabled to harfbuzz

Commits added to the branch:

  45bb4dc... ci: Add a macos build
  d55f938... printing: cairo-pdf is needed
  93d795e... printing: Remove cairo header checks
  0605c3c... ci: Fix the harfbuzz build on MacOS
  0c81248... ci: Disable pixman tests on MacOS
  710ef00... Fix the cairo build on OS X
  77feb51... Pass coretext=enabled to harfbuzz