Update all tests

tests/language/built_in_identifier_illegal_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Check that we cannot use a pseudo keyword at the class level code.
 
 // Pseudo keywords are not allowed to be used as class names.
-class abstract { }    /// 01: compile-time error
-class as { }          /// 19: compile-time error
-class dynamic { }     /// 04: compile-time error
-class export { }      /// 17: compile-time error
-class external { }    /// 20: compile-time error
-class factory { }     /// 05: compile-time error
-class get { }         /// 06: compile-time error
-class implements { }  /// 07: compile-time error
-class import { }      /// 08: compile-time error
-class library { }     /// 10: compile-time error
-class operator { }    /// 12: compile-time error
-class part { }        /// 18: compile-time error
-class set { }         /// 13: compile-time error
-class static { }      /// 15: compile-time error
-class typedef { }     /// 16: compile-time error
+class abstract { }    //# 01: compile-time error
+class as { }          //# 19: compile-time error
+class dynamic { }     //# 04: compile-time error
+class export { }      //# 17: compile-time error
+class external { }    //# 20: compile-time error
+class factory { }     //# 05: compile-time error
+class get { }         //# 06: compile-time error
+class implements { }  //# 07: compile-time error
+class import { }      //# 08: compile-time error
+class library { }     //# 10: compile-time error
+class operator { }    //# 12: compile-time error
+class part { }        //# 18: compile-time error
+class set { }         //# 13: compile-time error
+class static { }      //# 15: compile-time error
+class typedef { }     //# 16: compile-time error
 
 
 main() { }