SI-6363 removes scala.reflect.base
SI-6363 removes scala.reflect.base

As the experience has shown, there's no need for a separate layer of reflection
in scala-library.jar. Therefore I'm putting an end to it.

som-snytt/scala-partest,scala/scala-partest,lrytz/scala-partest,SethTisue/scala-partest,scala/scala-partest