www/pacparser: Add new port
Pacparser is a library to parse proxy auto-config (PAC) files. Proxy
auto-config files are a vastly used proxy configuration method these
days. Web browsers can use a PAC file to determine which proxy server to
use or whether to go direct for a given URL. PAC files are written in
depending upon URL, source IP address, protocol, time of the day etc.
PAC files introduce a lot of possibilities.