[gcr] (3 commits) Non-fast-forward update to branch nielsdg/drop-gtk-library

[Niels De Graef <nielsdg src gnome org>]

The branch 'nielsdg/drop-gtk-library' 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:

  9d4cddc... Drop gcr-gtk3 and gcr-gtk4

Commits added to the branch:

  b8d577f... meson: fix GCK version macros (*)
  b372088... gcr: Fix criticals if a CN is null (*)
  d113b81... Drop gcr-gtk3 and gcr-gtk4

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