[PATCH 0/5] MR8123: winex11: Track _MOTIF_WM_HINTS property in the window state.

[Rémi Bernon (＠rbernon)]

And a couple of other minor and (hopefully) harmless changes, in preparation for !8079 as it would otherwise grow large.

The main thing here is the introduction of _MOTIF_WM_HINTS into the state tracker, changing the property can trigger unexpected ConfigureNotify events and we will need to serialize its updates with other _NET_WM_STATE and window config requests in order to avoid getting surprised and confused.

It will also later be useful to be able to track further consequences of _MOTIF_WM_HINTS changes on Mutter-based window managers, such as a ReparentNotify > UnmapNotify > FocusOut > MapNotify > FocusIn > ConfigureNotify event sequence, to eventually ignore the transient focus loss and avoid changing Win32 foreground window during it.