Retry if we hit a TCP timeout if some data was sent and only error out
when we get an error or no data was sent in the time period.

started fixing that, and then I fixed another couple of nits and polished
the naming a bit and ...

Well, you know how it is.

Changed the backend matching function to take a call-back function
to eliminate the need for the memory which got leaked.

This meant that backend.list could also use it, if only the parsing
code accepted a blank input.

So I rewrote the parsing code to also allow empty names, so you can:
	backend.list (:80)
	backend.list (192.168)
etc.

And then I added a summary report of the probing, if it is happening,
and explicitly say that no probing is happening if it isn't.

Drop varnishsizes, since it's pointless now (you can get the same
functionality with varnishhist -p size)

This reverts commit 5f45e4ca.

Make it possible to mark backends as sick or healthy by way of

  backend.set_health $backendname (sick|healthy|auto)

document gzip'ed.

Fixes	#1029

Prefer vcl_name(ipv4,ipv6,port) to the old vcl_name in output.

Fixes	#1046

Also optimise out a few strlen calls in favour of just tracking the
lengths.

Fixes: #1047

one byte reads for the hex-length headers.

catch trouble that materializes only when we destroy the VGZ instance.

Fixes	#1037
Fixes	#1043
Fixes	#1044

to fail, and act accordingly.

Convert all the old changelogs to restructured text, drop xsltproc
from the build system and adjust documentation appropriately.

FetchBody.

to clean those up non-fatal.

Fixes	#1036

The thread (s%d/c%d) still dies, but it does not mark this as
fatal with respect to the test as such.

This is useful where varnishd shuts the connection on a backend
prematurely, as part of the correct execution of a test.

Fix a undue recursion problem with asserts in the vtc_log code.