Author: Pawel Worach <pawel.worach@gmail.com>

Author: Pawel Worach <pawel.worach@gmail.com>
Enable squid to lookup /etc/services for named peer ports.

Here is patch so you can use port names from /etc/services in
squid.conf for cache_peers like so:
   cache_peer upstream.example.net parent http-cache icpv2

assumng you have something like this in /etc/services
  http-cache   8080/tcp
  icpv2           3130/udp

This became needed here where we have the same squid.conf's deployed
across a cluster of reverse proxies and we control originserver
addresses via a hosts file and originserver  ports via /etc/services
locally on each node.