Preupgrade using a local server.

[Rahul Sundaram]

Mikkel L. Ellertson wrote:
>
> I had missed the last line of the README - dumb me. Looking at it
> now, it looks like your advice is incomplete:
>
> Please note that /usr/share/preupgrade/releases.list is ignored and
> is only being shipped for compatibility reasons. Use ~/releases.txt
> for customization
Ah, I knew the method was being changed but assumed it hadn't since the 
file existed. My bad.

Rahul