8029178: Parallel class loading test anonymous-simple gets SIGSEGV in Metaspace::contains Summary: Metaspace::contains cannot look at purged metaspaces while CMS concurrently deallocates them. Reviewed-by: mgerdin, sspitsyn, jmasa

// 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();
}