[mutter] (17 commits) Non-fast-forward update to branch wip/carlosg/clipboard-manager

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/clipboard-manager' 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:

  d2bc5a5... x11: Add X11 selection input/output streams
  757c615... core: Add MetaSelection and MetaSelectionSource
  eac079a... x11: Add X11 MetaSelectionSource implementation
  297ecfd... wayland: Add wayland MetaSelectionSource implementation
  a57b699... core: Set up MetaSelection on MetaDisplay
  0e463c5... x11: Add X11 selection management
  fa9538b... core: Add memory-based selection source
  b45ffa7... core: Add clipboard manager
  2d1beb4... wayland: Integrate with MetaSelection
  8600d35... wayland: Reduce MetaXWaylandSelection to just DnD
  521b6b3... Make MetaSelection, MetaSelectionSource and MetaMemorySelec

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 (*)
  7718e67... compositor: Destroy window actors list on destruction (*)
  3ba7996... compositor: Disconnect from stage signals on destruction (*)
  736cac4... compositor: Remove unused background_actor private referenc (*)
  156980e... x11: Add X11 selection input/output streams
  a984622... core: Add MetaSelection and MetaSelectionSource
  c95db7c... x11: Add X11 MetaSelectionSource implementation
  09aa82d... wayland: Add wayland MetaSelectionSource implementation
  ab76576... core: Set up MetaSelection on MetaDisplay
  37144f0... x11: Add X11 selection management
  535ce00... core: Add memory-based selection source
  5c009c2... core: Add clipboard manager
  634f512... wayland: Integrate with MetaSelection
  17d00d4... wayland: Reduce MetaXWaylandSelection to just DnD
  02c9952... Make MetaSelection, MetaSelectionSource and MetaMemorySelec

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