Do not advance the subject but use the ovector information as offset,
pcre might need to peek back when handling lookbehinds.

Original patch from MegaMaddin via github.

Fixes: #1557

per object, in line with the functionality as it was in Varnish 3.0.

Conflicts:
	bin/varnishd/cache/cache_vrt_var.c

Initial patch by Meng Zhnag - jammy.linux@gmail.com

Conflicts:
	lib/libvmod_std/vmod_std.c

backslash is used for escaping in varnish-cli, so escape the backslash
to actually pass "\.png$".

Minor cosmetic changes while here. Discussed with Dag on Frankfurt.

Move explanation to its own section. Also mention the state options.

This had the same effect as writing to beresp.uncacheble.

Conflicts:
	bin/varnishd/cache/cache_vrt_var.c

With this is possible to find out whether the request was a pass (or
hit-for-pass) in a single place.

Because -0 == +0, the use of negative numbers as a distinction between
hits and misses in the recorded bucket history fails when there are
entries of index 0.

Fixes: #1623

The varnish-counters man page looked so sad for the
counters without long descriptions. Not there yet, but a step
on the way.

In the long description we have sufficient room to
use the full word.

Submitted by:	Muhammad Adeel via github

Found by:   Geoff

Source data from file time on repo.varnish-cache.org.

Fixes: #1349

Trivial test VCL:

	C{ }C; vcl 4.0;

system size

This is to spot obvious typos

in play in a way that does not lead to panics.

Spotted by:	Martin
Fixes		#1607