couple questions on method handle combinators

[Roland Westrelin]

> The is due to the call to invoke, which performs an asType
> transformation and thus the receiver is not constant.

So it's effectively constant but the compiler can't see it? I had a
patch that added profiling of that receiver value. It didn't seem to
show any benefit at the time. I wonder it would make sense to experiment
with something similar again.

Roland.