Add source roots for IDE features to work in sources, but exclude from Make:
these modules are compiled by the new compiler from build.xml and some weird
errors may arise if we compile it with the old compiler (and also output of
that compilation won't be used anyway)
Metadata for KFunction classes is now longer serialized along with built-in
classes. This effectively means that it's no longer possible to find KFunction
classes via dependency on built-ins. There should be a kotlin-runtime library
in the specified classpath for reflection types to be resolvable.
A lot of tests were moved and changed, because tests on callable references
require stdlib in classpath from now on
Alexander Udalov