Squid cache is only supported for one stable release.  There was an
exception for squid 2.7 (www/squid) as it was supported until squid 3.x
reached feature parity which occurred with the release of Squid 3.2

Thus the maintainers of Squid have declared Squid 2.7 reached End-of-Life
on 14 August 2012.  As a result, set this port to expire on 15 Sept 2014.

Seven ports dependent on www/squid have been deprecated with the same
date. Perhaps they can be switched to www/squid33 before they expire.

Approved by:	portmgr (implicit, some ports not staged)

minor COMMENT typos and surrounding whitespace fixes. A few Makefiles
where not included as they contain Latin-1 characters that break
the Phabricator workflow. Category W.

CR:		D510
Approved by:	portmgr (bapt)