If there was more than one of the User-Agent, Referer, Authorization,
X-Forwarded-For or Host header in a request, varnishncsa would leak
some memory.  We now just use the last value.

Fixes #898

Thanks to omes and vorpal for diagnosis and patch

Fixes	#891

Now for all the hard bits...

Start streaming response code

NB: no streaming happening yet.

Thanks to Magnus Hagander for spotting one of those.

Use an int rather than a char for counting.

Thanks to Thierry for the diagnosis.

Fixes #896

The syntax for enabling ESI has changed in trunk, update the
documentation to match.

can save a lot of asserts and calls.

changes to sbuf in FreeBSD.

object in Transient storage and if that also fails, 503.

Fixes 879

Fixes	#890

In general I would not advice doing this, but if you are strictly
on a fortified localhost or localnet I can see the point.

Fixes	#893

draconian about error handling and debugging.

Properly handle two src= attributes in an esi:include tag (ignore
the entire tag, log the error)

Deal with clients which close the connection half-way through an
ESI delivery.

Make it possible to specify the period varnishtop should integrate
numbers over.  This makes it easier to figure out per time period
stats.

Fixes	#887