[README] [VERY IMPORTANT] Using new ML from Monday on

[Christopher Roy Bratusek]

Hi all,

we'll start using the new ML beginning with Monday. If you subscribed 
after I imported you all (say in the last 2 - 3 weeks), follow the 
instructions at http://sawfish.tuxfamily.org/ to manually subscribe to 
the new ML. If you were subscribed to this ML before, you already are 
auto-subscribed to the new one.

(The Wiki will get the info on Monday, then the new ML is in use).

Chris