[mutter] (5 commits) Non-fast-forward update to branch gbsneto/cleanup-x11-from-meta-window

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

The branch 'gbsneto/cleanup-x11-from-meta-window' 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:

  6feba08... window: Move _NET_WM_SYNC_REQUEST and family to MetaWindowX
  6be714a... window: Delegate map and unmap to subclasses
  332b5f5... window: Delegate meta_window_has_pointer to subclasses
  883074a... window: Trap X11 warp pointer errors on MetaBackendX11
  706134d... window-x11: Cleanup header and shuffle function locations

Commits added to the branch:

  f8577ce... window: Move _NET_WM_SYNC_REQUEST and family to MetaWindowX
  1d92669... window: Delegate map and unmap to subclasses
  1940de6... window: Delegate meta_window_has_pointer to subclasses
  8480699... window: Trap X11 warp pointer errors on MetaBackendX11
  7dbc381... window-x11: Cleanup header and shuffle function locations