Merge changes from topic "post-asTypeAdapter"

* changes:
  Add MethodHandle loop combinators from OpenJDK 11.0.13
  Update MethodHandles.filter methods to OpenJDK 11.0.13
  Avoid boxing and unboxing in PermuteArguments transformer
  Import MethodHandles.permuteArguments() tests from OpenJDK 11.0.13
  Add MethodHandles.foldArguments(MH, int, MH) from OpenJDK 11.0.13
  Add MethodHandles.dropArgumentsToMatch() from OpenJDK 11.0.13