test rename overhaul: step 8 - language tests

tests/language/label6_negative_test.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.
 // Dart test program to test check that we catch label errors.
 
 
 class Label6NegativeTest {
   static testMain() {
     L: while (false) {
       break;    // ok;
       break L;  // ok
       void innerfunc() {
         if (true) break L; // Illegal: jump target is outside of function
       }
       innerfunc();
     }
   }
 }
 
 
 main() {
   Label6NegativeTest.testMain();
 }