test rename overhaul: step 8 - language tests

tests/language/static_postfix_operator_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.
 
 int a = 0;
 int b = 0;
 
 withTryFinally() {
   bool inIt = false;
   // Do a try/finally to potentially force a non-optimizing compiler.
@@ skipping 11 matching lines @@
   if (b++ == 0) {
     inIt = true;
   }
   Expect.isTrue(inIt);
 }
 
 main() {
   withTryFinally();
   withoutTryFinally();
 }