symfony/symfony — pull request #4293 by ouardisoft (2012-05-15 14:51:42+00:00)
Title: Change must-proxy-revalidate by proxy-revalidate

According to specification of Cache-Control i changed must-proxy-revalidate by proxy-revalidate

Docs: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9.4