[Pharo-project] removing versions from configurations

Hi, The Moose build broke because the 'default' version was removed from ConfigurationOfRPackage. I fixed it now by using #stable, but that is not the issue. I understand the need for cleaning, but we should be aware that removing versions from configurations can have far reaching ripple effects. Cheers, Doru -- www.tudorgirba.com "From an abstract enough point of view, any two things are similar."