Rewrite Vary. Use A-L instead of A-E.
A-E is handled by varnish anyway and this is confusing
Language and markup polish.
Feedback from dharrigan and bjorn
Subtly change this test-case.

We may have to retire it, it is quite flakey overall for reasons that
are not worth the bother to work around.
Send the fetch-work to a different thread.
More polish. Removed a duplicated sentence
Accept-accept
Add intro
Reference cleanup.
How to debug crashing child.
objects in VCL.
Correct what was wrong and describe obj.
Ruben added reference to VMOD directory.