[Squeakland] server change with more info

[Yoshiki Ohshima]

  I was supposed to send this text instead of the previous one.
Please don't ignore ^^;

----
Hi everyone,

We're changing the mail server for the Squeakland community mailing
list (squeakland at squeakland.org)

If all goes well, another email will follow this one to say that it's
done.

If no emails follow within 48 hours (before 17:00 GMT, July 9th) ,
then please re-subscribe at http://squeakland.org/discuss/ ... but not
until then.
----

-- Yoshiki