Specifically, when the Scala version for sbt is the same as that for the project being built,
the jars in UpdateReport should be the same as those in ScalaProvider. This is because the
loader will come from the ScalaProvider, which uses jars in the boot directory instead of the
cache. The first part of the fix for #661 checks that loaded classes come from the classpath
and so they need to line up.
It is now used for consoleProject, run, and test. This loader verifies
that all classes loaded through it came from a particular classpath or
from the "root" loader. Root loader here is the launcher loader so that
those classes with native bindings come from that shared loader.
Mark Harrah
Grzegorz Kossakowski