PRIV_REQ/SESS in vcl_backend_*

[Poul-Henning Kamp]

--------
In message <CAEh05Vbnm+FRkLUn368B5tYKAqSNAcw4RCnzkWR9CxhuJwzuoA at mail.gmail.com>
, Dag Haavi Finstad writes:

>Here's a new set of patches, following the discussion at VDD14Q4
>(https://www.varnish-cache.org/trac/wiki/VDD14Q4#Notestakenduringthemeeting)

I've quickly eye-balled them and they look sane: commit please

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Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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