Ported the boltsort vmod to 4.0 and included it
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.
Reorganise querysort a bit

Also kill superflous function and test. Is this a candidate for its
own file?
Add a string to real conversion function

As discussed on the latest vdd.
Add a couple of 'const' and a missing star
Always expire the ims-candidate object on a successful fetch

Fixes	#1530
Generalize v1f_pull_chunked() into HTTP1_Chunked() which can also be
used on requests.
Implement proper handling of chunked encoding of req.body.

Fixes	#1524
Opps, forgot to commit from top of tree
Add libedit dependency.

Fixes: 	#1509
Now really make chunked req.body work with pass.

Please test this ASAP (before 4.0.1)
Treat missing t_end in varnishncsa as being the same as t_start

This makes varnishncsa continue to log if the end timestamp should be missing for some reason.
Add varnishncsa logging of pipe requests

Fixes #1269
Add Begin and Link VSL records for piped requests.

This allows varnishlog and the other tools to group it automatically
with the client request.
Parse byte counters for piped requests in varnishncsa