[mutter/wip/surface-content] (15 commits) ...get xwayland working again

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

Summary of changes:

  59f79e8... constraints: CSD windows need to have their titlebar kept o (*)
  2054594... Revert unintentional merge from wip/surface-content to wayl (*)
  c19b32c... Always map the client and frame windows
  59aed70... compositor: Remove meta_compositor_window_[un]mapped
  a15d629... compositor: Remove pending_input_region
  0d43c6d... surface-actor: Move unobscured_region processing here
  234e75d... window-actor: Simplify the unredirected check in cull_out
  b45be1a... compositor: Simplify the unredirected window management cod
  8b30f56... window-actor: Flip set_redirected around
  da913c5... window-actor: Remove old unused APIs
  6a19e3c... Move position-changed / size-changed signals to the MetaWin
  02f30b6... surface content
  f22df2c... xwayland: Update the surface actor for the window on set_wi
  63e6e1d... window-actor: Don't use TFP under XWayland
  35ddad9... get xwayland working again

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