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

VCL reference it might have, in order to not hold on to discarded VCLs
forever.

types.  Have the python code learn the mapping from them.

Various cleanup and tightening of code.

set req.http.Cookie = req.http.Cookie + " " + req.http.Cookie-sess;

do the obvious thing, even if req.http.Cookie does not exist.

The underlying issue was a badly though through overloading of
the NULL value to mean "Unset".  Now it has its own magic marker.

Fixes #1218

Be more aggressive about tracking const values and merge more const
strings at compile time.