Support varnish4 response structure when parsing cli_buffer param
Varnish4 fix: req.request has changed to req.method as of 4.0tp2
Varnish4 fix: req.backend is not req.backend_hint
Varnish4 fix: in vcl_backend_response (was: vcl_fetch) use beresp.grace rather than req.grace since req.* is no longer available
Fix Typo in bereq.uncacheable (used to be return (hit_for_pass))
Varnish4 fix: vcl_hash should now return (lookup) rather than return (hash)
Varnish4 fix: vcl_recv should return (hash) instead of return (lookup) for static assets
Varnish4 fix: read request URL from bereq rather than req in vcl_backend_response (used to be vcl_fetch) since req.* is no longer available here
Varnish4 fix: process cookies on bereq and beresp rather than req
Varnish4 fix: Fix inline-C to use new style for VRT_SetHdr that uses a struct to pass header type and header string rather than two separate args now