Other minor cleanups

This adds %I and %O formatters to varnishncsa, which are total bytes
received and total bytes sent. These are similar to the same
formatters in apache (with mod_logio). Useful for bandwidth accounting.

Patch by: David Robertson

Verify that s_resp_bodybytes is indeed incremented the correct number of bytes on partial content responses.

Pointed out by:	Dridi Boukelmoune

Fixes #1510

is a contention point and scales negatively with number of thread-pools.

Sum into a per-pool dstat structure instead, and have the first
idle thread summ that into the global counters without blocking the
pool mutex.

Fixes	#1495

(I hope)

also takes account of fetch jobs.

what the real solution is going to be.

When we in the future introduce something new and shiny here, don't
automatically start putting it into the tarball release.

This may seem a bit backward, the main idea is to avoid hardcoding
the section/subdirectory names yet another place.

These are just intermediate files written by Sphinx to
build the HTML documentation. We don't need to distribute
them.

With parallell builds, building this file has usually not happened yet
in the build directory.

Suggested by: Martin

We don't need to add the RST2ANY_FLAGS arguments twice.

Fixes	#1501

pick a backend.

Add a reference from the init function to any non-anonymous match_acl_*()
functions to ensure the compiler does not barf.

Fixes	#1504

This follows the format Apache logs in.

One of the examples was still referring to the old way of defining
directors, which I am sure is confusing for the new users this
document is meant for.

Noticed by: coredump on irc.

Used the occation to do some minor scrubbing of the text.

None of our automatic build environments have Python 3 currently.

Use the strict parsing mode (still infant) to be sure
that our own vmod.vcc files are valid.

This description isn't used anywhere, and it doesn't contain
much useful information.

This is one of those tiny jobs you start on (add --strict),
and then it just goes downhill from there.

Main changes:
* Use optparse to parse command line arguments.
* With --strict it aborts if a parse or format error is seen.
* A basic test case for the parser has been added.

No changes were made to the parser or output format.

Adding the test case meant reordering the execution flow.

Since Varnish code standard is using tabs, I've kept this to my
best ability. Pylint is not happy about this and give the code
a score of -4 out of 10 points. :-)

These hard-code references were forgotten when I
removed this file in ebbd8288.