Bug#499437: Squid 2.7 Stable 4 is available; fixes DNS issue

[Nick Lowe]

Package: squidVersion: squid/2.7.STABLE3-1

Squid 2.7 Stable 4 was released early August

Fixes DNS issue that we have had:
http://www.squid-cache.org/bugs/show_bug.cgi?id=2393