operator==( const nsCOMPtr<T>& lhs, U* rhs )
operator==( const nsCOMPtr<T>& lhs, NSCAP_Zero* rhs )
operator==( const nsCOMPtr<T>& lhs, U* rhs )  {    return NS_STATIC_CAST(const void*, lhs.get()) == NS_STATIC_CAST(void*, rhs);  }