[gnome-shell] (2 commits) Non-fast-forward update to branch benzea/systemd-clean-shutdown-with-extension-disabling

[Benjamin Berg <bberg src gnome org>]

The branch 'benzea/systemd-clean-shutdown-with-extension-disabling' 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:

  64adbb0... main: Create/delete a gnome-shell-stable file
  f0c88f6... data: Enable clean session shutdown after gnome-shell failu

Commits added to the branch:

  e5b88da... extensionSystem: Create a file to flag that extensions are 
  f318262... data: Enable clean session shutdown after gnome-shell failu