ninpaths updated

[Olaf Titz]

> That's mildly unfortunate... it wouldn't add much more to the bytes sent
> to add "CANCEL " to the beginning of each line, and I think it would make
> it easier to get standardized down the road.  Should we consider that?

Then we could as well skip MODE CANCEL and make CANCEL a "regular"
NNTP command. This is perhaps the best solution, as it elevates the
whole thing from "quick hack" to "semi-standard" :-) (It also saves us
the additional CScancel state.)

Olaf