8019973: PPC64 (part 11): Fix IA64 preprocessor conditionals on AIX. Summary: On AIX 7.1 systemcfg.h defines IA64 unconditionally, so test for !AIX where IA64 is used. Reviewed-by: dholmes, kvn

// 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();
}