pcap-linux.c memory-mapped mode.
Always doing a poll() if there are no packets available allows us to
catch disappearing interfaces in memory-mapped mode, so remove the
caveats about Linux.
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.
Guy Harris