Regex from SqueakSource

[fniephaus]

widgets depends on Regex which is loaded from SqueakSource.
Not sure if this is the only source, but it might be good to update the dependency, since SqueakSource has been read-only for quite a while now.

[LinqLover]

Wasn't VB-Regex replaced by Regex-Core anyway and de facto is deprecated? See: http://forum.world.st/Question-about-VB-Regex-tp5114105p5114120.html