You need to know what you are doing.

Critbit is teh shit.

it is buggy, work around it.  If the backend sends chunked encoding
we don't catch it and fail the transfer.

Fixes: #1320

by lru->mtx.

Spotted by: Martin

Remove a debugging message.

Test case by: Federico G. Schwindt

Fixes: #1417

we close from our side with the new SC_RESP_CLOSE status.

Spotted by:	martin

Now that we have a proper purge-mechanism, all the magic to
set obj.{ttl,grace,keep} in vcl_hit{} can go away.

The builtin VCL supports this now. Since so many noticed this missing
in 3.0, I think it should be mentioned.

Generated RST file should live in include/ like the others, not in reference/.

Try to make the code slightly more readable through a descriptive variable name
for the file handle.

I don't have Python 3.1, but I do have Python 3.3.5 which should suffice.