8002273: NMT to report JNI memory leaks when -Xcheck:jni is on Summary: Allows NMT to report that JNI thread failed to detach from JVM before exiting, which leaks the JavaThread object when check:jni option is on. Reviewed-by: acorn, dholmes, coleenp, ctornqvi

// 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();
}