Eta expand $apply projected types if needed

It turns out that asSeenFrom can produce types
that get projected with $apply but that are not
higher-kinded. An exampple failure is in Iter3,
andother in scala.collection.immutable.Map (which is
now part of the test suite).

We now detect that situation, and eta expand the
projected type in `derivedSelect`, this will
force a subssequent `lookupRefined` which will give
the desired normalized type.

Also added is a configurable test that checks that
$apply projected tyeps are in fact higher-kinded.

0 files changed, 0 insertions, 0 deletions