Bug 26038

	
	The old fetch(1)/libftpio library unconditionally used the RFC
	sanctioned high port range.  This space is intentionally intended
	to be used so that proxy libraries can rewrite the PORT tcp packets
	on data streams on NATs, and so that firewalls have a safe target
	range that can allow incoming connections that is free from the
	ephemeral ports that are used by things like rpc services.

	The new fetch/libfetch has regressed to requiring an option to
	use this.

Fix: Minimal fix, minus man page and some comment updates.
How-To-Repeat: 
Old code (unconditional use of IP_PORTRANGE_HIGH):

       portrange = IP_PORTRANGE_HIGH;
       if (setsockopt(s, IPPROTO_IP, IP_PORTRANGE, (char *)
            &portrange, sizeof(portrange)) < 0) {
                close(s);
                return FAILURE;
       };

New code (broken):
	    high = CHECK_FLAG('h');
	    arg = high ? IP_PORTRANGE_HIGH : IP_PORTRANGE_DEFAULT;
            if (setsockopt(sd, IPPROTO_IP, IP_PORTRANGE,
                           (char *)&arg, sizeof arg) == -1)
                goto sysouch;
            break;
	(where the 'h' flag is off by default :-( )