test rename overhaul: step 5 - frog and leg tests

frog/tests/leg_only/closure_capture4_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.
 
 closure0() {
   var input = [1, 2, 3];
   var fs = [];
   for (var x in input) {
     fs.add(fun() { return x; });
   }
@@ skipping 73 matching lines @@
 }
 
 main() {
   closure0();
   closure1();
   closure2();
   closure3();
   closure4();
   closure5();
 }