Significant updates for the VNC module:-
1) Support for the new API calls allowing both server and client
multi-monitor resizes.
2) The s member variable of the vnc_screen_layout structure is no longer
dynamically allocated.
3) The module server_width and server_height member variables are
removed as these are just duplicating server_layout.total_width and
server_layout.total_height.
4) When the server screens are resized, there is no need to restart the
entire resize state machine as we already know at this point that
the server supports resizing.
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