As discussed on the latest VDD.

While here unify check.

This allows varnishlog and the other tools to group it automatically
with the client request.

Fixes #1269

This makes varnishncsa continue to log if the end timestamp should be missing for some reason.

Please test this ASAP (before 4.0.1)

Fixes: 	#1509

Fixes	#1524

used on requests.

Fixes	#1530

As discussed on the latest vdd.

Also kill superflous function and test. Is this a candidate for its
own file?

in the std vmod as discussed on the latest vdd.

Renamed it to std.querysort. Two tests where 
included. They both pass on my machine.

Reminded by: daghf

Seems like requiring a version from 2010 was way optimistic.

EL6 has v0.6 which was the first version rst2man appeared in.

We still have a few bugs left to fix, but start out with this so the
Jenkins machinery can be fine tuned in advance.

Renovate and simplify the compile-time binding between VMODs, VCC
and varnishd.

Follows the change in the std vmod a while ago.

Fixes	#1518

Add a bit more detail while cleaning up the language.

Reformat for tabs instead of 7 spaces.

Using multiple names for the instanciateed directors in this document
just makes it more confusing, since .add_backend() and .backend() is
mostly identical for all of them.

Fixes: #1519

keep them in sync.  If you want a custom reason field, set status
first, then reason.

With this in place, HTTP1_Write() doesn't need to worry about them
being OK, and we can polish that code a fair bit.

Turn a couple of boolean arguments into more readable magics.