o (option) for extended statistics. If enabled (not by default) collect print
rcode, uptime, spoofnearmisses, cache size, qtype,
bits(RD, CD, DO, EDNS-present, AD)query, (Secure, Bogus)reply.
+ perhaps also see which slow auth servers cause >1sec values.
+ stats-file possible with key: value or key=value lines in it.
o overhaul outside-network servicedquery to merge with udpwait and tcpwait,
to make timers in servicedquery independent of udpwait queues.
o 0x20 fallback so it can be enabled without trouble.