3.0: remove client messages

[Benjamin Otte <otte gnome org>]

Hey,

I intend to remove the following things from GDK on my quest to get
rid of GdkNativeWindow.
structs:
- GdkEventClientMessage:
functions:
- gdk_add_client_message_filter()
- gdk_event_send_client_message()
- gdk_event_send_clientmessage_toall()
- gdk_event_send_client_message_for_display()
signals:
- GtkWidget::client

That code like it hasn't been touched in years, Google codesearch
didn't find any users and most importantly it's a horrendous API, so
I'd be happy if I could just make it die instead of having to port it
over to non-GdkNativeWindow usage.

Which brings me to the point of this mail:
Is there an actual user of this?

Cheers to Xan[1],
Benjamin

1: http://twitter.com/xanlpz/status/31394054252003329