+Increase TCP/IP listener backlog from 3 (which I am guessing was
+copied from the SunOS manual entry way back when) so SOMAXCONN, so
+that the socket will queue as many incoming connections as it's able
+to handle ongoing connections. In other words, it will never now
+refuse a connection that it would be able to handle merely because
+it's not got around to accepting() enough of the pending connections
+yet. This is the behaviour anyway under Linux, where the listen()
+argument is ignored; but not under BSD and on systems such as
+MS-Windows that use BSD-derived TCP/IP stacks. The behaviour of
+YAZ-based servers should now be uniform across operating systems in
+this respect.
+