reuse them a few places by the looks of it.

Add VCA_UNKNOWNHDR (=10) fields for unknown HTTP headers.
If more headers arrive than that, they're lost (and logged as such).




git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@97 d4fa192b-c00b-0410-8231-f00ffab90ce4