[gimp] (3 commits) Non-fast-forward update to branch fix-gitlab-ci-mypaint-arch

[Jehan <jehanp src gnome org>]

The branch 'fix-gitlab-ci-mypaint-arch' 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:

  b1f7a74... gitlab-ci: our CI base system (Arch) fixed their libmypaint

Commits added to the branch:

  ba6973e... Fix Meson some changes not pulled from Autotools (*)
  1f20b72... Fix gitlab-ci : Archlinux fixed the bug upstream. (*)
  035802c... gitlab-ci: our CI base system (Arch) fixed their libmypaint

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