This works around a Linux kernel bug where the epoll_wait will return
EINTR when the process is subjected to a ptrace or the OS wakes from
suspend.

Fixes: #1763

Update built-in usage text to reflect that -T is optional.

Forgotten in commit 8139164b.

* Adhere to current style guide.
* Sort argument list.
* Add missing reference to related man pages.

And stop using it in the test suite.

Also for 4.1

There is a Squid server listening in today's office...

A VCL may show up as auto/cooling in the CLI, breaking the columns align
in the output.

Also for 4.1

Also for 4.1

have to walk the full list all the time.

This is a minimal fix for backporting to 4.1.x

Fixes:	#1798
Fixes:	#1788

Fixes:	#1821

context.

Cherry-picked and modified from patch (pull#71) by:	lochiiconnectivity

(which gets the busyobj) as a miss.

Testcase by:	daghf
Fixes:	1818

`orderto` -> `order to` for docs at https://www.varnish-cache.org/docs/trunk/reference/varnishd.html