to 1.0, might as well go with the place where Red Hat stuck the header
at one point and where the header "officially" resides.
(We should put a "backwards compatibility" note into pcap.3pcap.)
functions plus an overall man page for libpcap, and put them all into
section 3PCAP. That means you can actually do "man pcap_open_live" and
get something meaningful, rather than having to do "man pcap" and then
scroll through all the other stuff in the man page.