fix issue 356 by making test match spec

tests/language/src/PseudoKWNegativeTest.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
-// Using pseudo kw 'operator' as class name is not allowed.
-class operator {
-}
+// Pseudo keywords are not allowed to be used as class names.
+class abstract { }    /// 01: compile-time error
+class factory { }     /// 02: compile-time error
+class get { }         /// 03: compile-time error
+class implements { }  /// 04: compile-time error
+class import { }      /// 05: compile-time error
+class interface { }   /// 06: compile-time error
+class library { }     /// 07: compile-time error
+class native { }      /// 08: compile-time error
+class negate { }      /// 09: compile-time error
+class operator { }    /// 10: compile-time error
+class set { }         /// 11: compile-time error
+class source { }      /// 12: compile-time error
+class static { }      /// 13: compile-time error

[gbracha, 2012/01/11 19:27:01]

Below is the latest list of built-in identifiers from the spec. You will note
that you are missing assert, call (that is brand-new due to function emulation
and not a high priority yet), Dynamic and typedef. Also, native is not a
built-in identifier. It's a per-implementation extension, but it is not part of
the language. 

BUILT_IN_IDENTIFIER:
      abstract
    | assert
    | call
    | Dynamic
    | factory
    | get
    | implements
    | import
    | interface
    | library
    | negate
    | operator
    | set
    | source
    | static
    | typedef

 
-class PseudoKWNegativeTest {
-
-  static testMain() {
-    return 0;
-  }
-}
-
-
-main() {
-  PseudoKWNegativeTest.testMain();
-}
+main() { }