pagespeed/ngx_pagespeed — pull request #629 by jmaessen (2014-02-28 00:49:17+00:00)
Title: trunk-tracking: update from r3784 to r3811

The big change here is Vary: headers, which are no longer being stripped from the pagespeed response. Take a look; it might be we want to be smart about merging these headers with the original request's Vary: headers.