scala/scala — pull request #1318 by odersky (2012-09-16 20:08:03+00:00)
Title: SI-6336 Disallows value types in structuralal refinements

Structural refinements already have a number of restrictions, e.g. cannot refer to
type parameters of enclosing classes. We need to disallow value classes as well. Review by @harrah @paulp