googlecode pre-shutdown cleanup

Seems like some historical Squeak/Pharo projects might be worth
migrating to github just to maintain a historical record. Soon won't
be able to mark projects "moved".

https://code.google.com/p/support/wiki/ReadOnlyTransition
https://code.google.com/hosting/search?q=pharo
https://code.google.com/hosting/search?q=squeak

cheers -ben