[PATCH 8 of 8 v2] help: mark boolean flags with a ^ and explain that they can be negated (RFC)

[timeless]

>   options ([+] can be repeated, [?] are flags):

This is closer to how I was envisioning it.

> Having --no-noninteractive seems really sad. We could make --noninteractive
> hidden and then advertise --no-interactive as the long version.

Agreed

> Also, I don't think --no-no-backup is a good idea. --backup should be its
> negation.

Agreed