pagespeed/ngx_pagespeed — pull request #855 by jeffkaufman (2014-12-01 16:05:28+00:00)
Title: Rework parallization separation

* Use TESTTMP instead of TEMPDIR, following
a forthcoming change with mod_pagespeed.
* Stop assuming we have exclusive write access
to `mod_pagespeed_test/cache_flush/` and use
`mod_pagespeed_test/cache_flush/$$` instead.