requests, otherwise we end up filling it up with Content-Length: headers
if we manage to keep the backend busy.

Also make the snapshot of the preferred workspace-size volatile to ensure
that we are consistent.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1584 d4fa192b-c00b-0410-8231-f00ffab90ce4