When using varnishtop -1 on a large log file, the old linked list
approach was very slow.  Using a tree increases performance
significantly.  In a test, old was 15 minutes, 52 seconds, new code
changes that to about 1.8 seconds.

including truncating the length.

Inspired by:  patches and talks from martin

Add a function for comparing ban-strings, mostly to have a place to
put the explanatory comment.

Replace some magic numbers by #defines and segregate the ban-string

Base patch from:	martin
Fixes #1225

this information is no longer available.

Fixes #1228

Remove the XXXAZ(smp_chk_sign) after smp_append_sign(), as it causes
heavy unnecessary CPU usage after each sign update. No assertion
reports have come from this test, so there is no reason to expect the
signs not working.

size of the 'http_req_size' so that we don't run out of WS in case
of client pipelining.

Fixes	#1185

setppriv(PRIV_OFF) succeeds when waiving privileges.

fixes varnish builds on any Solaris OS older than onnv_140 due to
too strict assertions from [c613b135]

add history of solaris privileges

better comments

Submitted by:	Nils Goroll

Fixes #1201

processing all the old entries, unless -d was specified.

Fixes #1170

Fixed by: Federico G. Schwindt
Fixes: #1216

At least one case was brked.

Submitted by:	Federico G. Schwindt

Submitted by:	Federico G. Schwindt

Now only 100 more to go.

the actual error messages are somewhat less than helpful.

badvcl in that you can make sure it fails for the right reason.

All -badvcl's should be converted to -errvcl without undue delay.

Clean up some asserts.

and more orthogonal.

This is a "it works!" snapshot, there are improvements to the generated
C-code in the pipeline.

Use VSL_Dispatch instead of VSL_NextSLT in varnishtop, which does this
automatically for us.  Clean up accumulate() a bit in the process.

Fixes #1213