[mutter] (3 commits) Non-fast-forward update to branch wip/carlosg/disconnect-from-backend

[Jonas Ådahl <jadahl src gnome org>]

The branch 'wip/carlosg/disconnect-from-backend' 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:

  2c5c8ac... clutter: Use g_signal_handler_disconnect to disconnect freq

Commits added to the branch:

  eccf7b1... input-settings: Use 0 initialized struct for kbd a11y (*)
  502da97... window: free close dialog before unmanaging window from com (*)
  ba8f5a1... clutter: Use g_signal_handler_disconnect to disconnect freq

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