[racket] Racket v5.0.99.900 is available for testing

Version 5.0.99.900 is now available for testing from

  http://pre.racket-lang.org/release/installers/

(Note that this is not available from the usual download site.)

If all goes well, we will turn this version into a v5.1 release
within a few days.

This release is significant in that the gui layer has been rebuilt
(http://blog.racket-lang.org/2010/12/racket-version-5.html) so it
would be helpful to pay attention to potential problems in that
area.

Your help and feedback in testing this new release candidate would be
much appreciated.
-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                    http://barzilay.org/                   Maze is Life!