[mutter] (18 commits) Non-fast-forward update to branch wip/surface-content

[Jasper St. Pierre <jstpierre src gnome org>]

The branch 'wip/surface-content' 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:

 http://live.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  401cc05... compositor: Remove atom_x_root_pixmap
  d6b84c0... Move _NET_WM_WINDOW_OPACITY handling to the standard window
  1d23982... window-actor: Make the meta-window property construct-only
  214bb7e... window-actor: Move signal handler connections to the meta-w
  9f38358... window-actor: Remove suspicious optimization
  1516744... surface-actor: Move unobscured_region processing here
  e472abb... window-actor: Remove outdated code path
  1da93e7... window-actor: Never unredirect when under Wayland
  abae697... window-actor: Simplify the unredirected check in cull_out
  4e39fc8... compositor: Simplify the unredirected window management cod
  5e1aa7c... window-actor: Flip set_redirected around
  32c151b... window-actor: Remove old unused APIs
  2d2fe22... Move position-changed / size-changed signals to the MetaWin
  13c191a... surface content
  f130905... xwayland: Update the surface actor for the window on set_wi
  6c3e408... window-actor: Don't use TFP under XWayland

Commits added to the branch:

  65f2e29... window-actor: Make the meta-window property construct-only (*)
  e30be38... window-actor: Move signal handler connections to the meta-w (*)
  66af41f... window-actor: Remove outdated code path (*)
  bad48ea... introspection: Make MetaKeyHandlerFunc compatible with mast (*)
  f29241d... compositor: Remove atom_x_root_pixmap (*)
  8131f34... Move _NET_WM_WINDOW_OPACITY handling to the standard window (*)
  e7aff66... compositor: Remove meta_compositor_window_[un]mapped
  b932f7a... window-actor: Remove suspicious optimization
  4085ddf... surface-actor: Move unobscured_region processing here
  4a9428d... window-actor: Never unredirect when under Wayland
  70b4477... window-actor: Simplify the unredirected check in cull_out
  e54b6eb... compositor: Simplify the unredirected window management cod
  95b3edc... window-actor: Flip set_redirected around
  fe11e8a... window-actor: Remove old unused APIs
  afad4b3... Move position-changed / size-changed signals to the MetaWin
  f72d8a0... surface content
  c7925c0... xwayland: Update the surface actor for the window on set_wi
  744c437... window-actor: Don't use TFP under XWayland

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