No more test failure for libmysql, http://news.php.net/php.internals/55210

ext/mysqli/tests/mysqli_stmt_num_rows.phpt

@@ -82,7 +82,17 @@ require_once('skipifconnectfailure.inc');
 			$i++;
 		} while (mysqli_stmt_fetch($stmt));
 
-		if (7 !== ($tmp = mysqli_stmt_num_rows($stmt)))
+		/* NOTE to users
+		Behaviour with libmysql is UNDEFINED, see http://news.php.net/php.internals/55210
+		Because it is undefined it is allowed to the mysqlnd DEVELOPER to implement
+		any behaviour they like, including the one checked for in this test.
+		What the test does is cover an implementation detail of the mysqlnd library.
+		This implementation detail may, at any time, change without prior notice.
+		On the contrary, the mysqlnd way is a reasonable one and, maybe, one fine
+		day, after Klingons visited earh, becomes the official one. Meanwhile do
+		not rely on it.
+		*/
+		if ($IS_MYSQLND && (7 !== ($tmp = mysqli_stmt_num_rows($stmt))))
 			printf("[54] Expecting int/7, got %s/%s\n", gettype($tmp), $tmp);
 
 	} else {