scala/scala — pull request #2163 by paulp (2013-02-24 13:36:45+00:00)
Title: Refactors AsSeenFromMap to expose extension point.

The extension point was the initial motivation but I also tried to
bring some clarity to the internals. This is a setup commit for
scaladoc and interactive modularization, and also will be followed
by a fix for abstract types losing their prefixes (SI-6161.)