That silly equality sign constantly needed to be escaped and
is just unecessesary finger gymnastics. Die, please.

Add 'ms' conversion qualifier to std.duration, and update
documentation and test case.

Fixes: #1434

std.duration conversion function has a mandatory qualifier. Change the
wording from 'can' to 'must' specify the qualifier.

Add a test case for a string without a qualifier.

This kills `remove', `.request' and `.response'.  Use `unset', `.method'
and `.reason' instead.
ok phk.

There seems to be a tendency for systems to trip up the previous
10 second cli_timeout during nightly housekeeping operations, possibly
log rotation running out of cron.

Spotted by:	gquintard

They break the build if parallelised and make jenkins upset

Fixes	#1432