New scsh list without news

[Brian D. Carlstrom <bdc@martigny.ai.mit.edu>]

Because of the recent flamewar being crossposted to
comp.lang.scheme.scsh many users have requested to to be taken off the
mailing list. There are now two forms of the list one that gets the news
group traffic and one that does not. If you would like to switch let me
know.

-bri