test rename overhaul: step 8 - language tests

tests/language/static_field4_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.
 // Test that an instance field cannot be set as a static field.
 
 class Foo {
   Foo() {}
   var x;
 }
 
 class StaticField4NegativeTest {
   static testMain() {
     if (false) {
       Foo.x = 1;
     }
   }
 }
 
 main() {
   StaticField4NegativeTest.testMain();
 }