pagespeed/ngx_pagespeed — pull request #639 by jeffkaufman (2014-03-18 14:41:08+00:00)
Title: trunk-tracking: update from r3827 to r3852

* port EnrollExperiment tests.
* tricky changes to get gzip+ipro working properly.
* reduce code duplication by calling copy_response_headers_from_ngx instead of reimplementing it.
* port Vary: Accept test changes.
* lint fixes