[PATCH 0/1] MR8154: winex11: Wait for decoration change side effects before changing focus.

[Rémi Bernon (＠rbernon)]

Mutter and related window managers use a parent X window frame, and
temporarily unmap windows when their decoration is switched on/off.

This triggers an Unmap > FocusOut > Reparent > Map > FocusIn event
sequence, which we need to ignore in order to keep focus unchanged.

If we were wrong about it, the WM_STATE property should then change as
well, and we will eventually post a WM_WINE_WINDOW_STATE_CHANGED message
again and have another chance at changing the foreground window.