This involves making sure that the timestamp is within 15 mins of "now"
to be accepted. This has other rollover effects in that I don't send an
"old" C record on startup anymore, just send an A record followed by a K.
These days a newly minted C record will be along in 15mins or so anyway.
Made sh/newc terminal width aware.
Added CTY-1709 cty.dat data.