acceptor to center.

Fixes	#1147 and #1148

Fixes	#1153

if it fails.

64 backend VCL name + IPv4, IPv6 and portnumber.

Fixes	#1144

last without checking if the filename changed.

Fixes		#1145
Testcase by:	tobixen

Fixes	#1141

there is plenty of opportunity to prevent conditional delivery
in all the other vcl_*{}'s and there is a value in exposing
the actual response.

interrupted half-way through committing a bunch of stuff.

I'm passing on the test-case for two reasons: The code is in flux and
it will soon be obsolete, and second "delay 0.2" testcases are notoriously
flakey.

Submitted by:	Martin
Fixes		#1138

Submitted by:	Martin
Fixes		#1140

This simplifies some nasty corner cases.

in order to not dirty VM pages containing cached objects.

Fixes: #1135

Avoids vcc errors from constructs like "std.log("Test: " + 1);"

Fixes: #1134

If the chosen backend is sick or fails to give us a connection,
we rescale the keys position in the backends window onto the
all the remaining backends.

The upside of this is that we get a stable and predicatable
hash distribution.

The downside of this is that you are very unlikely to spot the
healthy .weight=1 backend between two .weight=100 sick ones before
your retries run out.

Inspired by: patch from WaveCDN

Fixes a case where we might get a cache hit even though hash_always_miss is set.

Fixes: #1073

building against an uninstalled Varnish build tree.