Description:
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For a client server application it would be very useful, if msg_get_queue can be told not to create the queue.

If the server part is not running and thus there is no queue, the client creates the queue via msg_get_queue believing to be able to communicate.

Of course there are means to tell the client the server is'nt there, but it would be by far easier to use an optional paramter to tell msg_get_queue what to do in case the queue does not exist.