Bug#941194: initscripts: remove some implementation details

[Ansgar <ansgar@43-1.org>]

Sean Whitton writes:
> On Thu 26 Sep 2019 at 09:01AM +02, Ansgar Burchardt wrote:
>> The section on initscripts has too much implementation details about
>> /etc/rcn.d; these are better explained by external documentation.
>
> Are you saying that they are *currently* better explained by actually
> existing external documentation, or that it would be better to have them
> explained by external documentation instead of the Policy Manual?  If
> the former, could you point to that documentation, please?

>From my diff:

    The ``sysv-rc`` runlevel system uses symlinks in ``/etc/rcn.d`` to
    decide which scripts to run and in which order, see the
    ``README.runlevels`` file shipped with ``sysv-rc`` for
    implementation details.

I think README.runlevels documents everything about how rcn.d scripts
are called that Policy also documents (at least the part removed in my
diff).

Ansgar