In addition to forcing esi:includes to be GET, we also need to nuke the
Content-Lenght header from the received request, because we already
dealt with that during the primary transaction.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@3232 d4fa192b-c00b-0410-8231-f00ffab90ce4