convert to use buildlink2 and include libpcap/buildlink2.mk to handle this
correctly. Also fix network library problems on Solaris. From pkg/22915
by Jonathan Perkin.
Fixes pkg/12209 by Riccardo Veraldi <veraldi@cs.unibo.it>
Changes since 1.0:
* directly uses libpcap functions and includes a few bug fixes to the
previous code. A few subroutines have been complitely rewritten.
This program filters the tcpump raw packet data looking for logins and
passwords on the most commonly used tcp ports (ftp telnet pop3 ...).
It dumps sniffed data to a file named sniff.log