Colorized REPL for GNU Guile.

NOTE: Now guile-colorized only support Guile-2.0.9 or higher!
Drop your Guile-1.8.x from now on ;-)

Add those lines to $HOME/.guile
(use-modules (ice-9 readline)
             (ice-9 colorized))

(activate-readline)
(activate-colorized)
