[polari] Non-fast-forward update to branch wip/fmuellner/xdg-app

[Florian Müllner <fmuellner src gnome org>]

The branch 'wip/fmuellner/xdg-app' 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:

  05dc466... xdg-app: Allow building as xdg-app
  a7818fc... xdg-app: Tighten bus access
  2640485... util: Add debug message

Commits added to the branch:

  a2410f5... xdg-app: Allow building as xdg-app