Mostly an attempt at pointing people that send pull requests on Github
in the right direction.

Move showing of debug counters from 'h' key to 'd' inside a running
varnishstat.

Fixes	#1449

Make sure we do not send a regular "end-chunk" to the
client if the streaming fetch fails.

to reduce code duplication a little bit.

on IMS fetch.

This should possibly be an official VSL record ?

This will be revisited post 4.0. Reorder while I'm here.

Only varnishreplay is left now.

This matches the rest of the code.

over a bogo-object.

This means that vcl_error{} looses access to obj.* variables, but
gains access to resp.* vaiables instead.

A couple of now obsolute test-cases retired.

	synthetic ( STRING_LIST ) ;

This eliminates the need for the SMS stevedore.