[gtk] (4 commits) Non-fast-forward update to branch subpixel-positioning

[Matthias Clasen <matthiasc src gnome org>]

The branch 'subpixel-positioning' 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:

  45b6032... Turn off metrics hinting
  9c3fc60... vulkan: implement subpixel positioning
  f84bbb0... gl: implement subpixel positioning

Commits added to the branch:

  988fac4... Add pango version checks (*)
  2c82280... Turn off metrics hinting
  fba9e14... vulkan: implement subpixel positioning
  a3dda04... gl: implement subpixel positioning

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