test rename overhaul: step 8 - language tests

tests/language/src/Prefix10NegativeTest.dart

-// Copyright (c) 2011, 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.
-//
-
-// Type parameters can shadow a library prefix.
-
-#library("Prefix10NegativeTest.dart");
-#import("library10.dart", prefix:"T");
-
-class P<T> {
-  P.named(T this.fld);
-  T fld;
-  main() {
-    var i = new T.Library10(10);  // This should be an error.
-    Expect.equals(10, i.fld);
-  }
-}
-
-main() {
-  var i = new P<int>.named(10);
-  i.main();
-}