[mutter] (2 commits) Non-fast-forward update to branch bilelmoussaoui/drop-zenity

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

The branch 'bilelmoussaoui/drop-zenity' 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:

  ab10b33... default-plugin: Drop confirm display change handler
  1893bc9... core: Drop the default close dialog implementation

Commits added to the branch:

  ac6977f... Default-plugin: Drop default confirm display dialog
  56d579a... Core: Drop the default close dialog implementation