Upgrade dns/dnsdbq to version 2.2.1.

• Summarize needs to never make two upstream queries
• When adding O: to QPARAM_OPTS, it has to be removed from the other getopt options
• Remove the strange deduplication logic that was never necy
• Improve doc of relative form with explicit labels
• Do not round upward for zone time durations, those are not sightings

Sponsored by: Farsight Security, Inc.