8022616: u4 should not be used as a type for thread_id Summary: Usage of u4 as a type for thread_id cause a compilation error on platform, where thread_id is a pointer Reviewed-by: sla, sspitsyn, minqi

// A simple interface, to allow an unknown foreign call from a class
// loaded with LOADER1 to a class loaded with LOADER2.
public interface IFace {
  public many_loader[] gen();
}