Add a test for testing evaluation order of getters.

tests/language/src/GetterClosureExecutionOrderTest.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 a getter is evaluated after the arguments, when a getter is
+// for invoking a method. See chapter 'Method Invocation' in specification.
+
+var counter = 0;
+
+get a() {
+  Expect.equals(1, counter);
+  counter++;
+  return (c) { };
+}
+
+b() {
+  Expect.equals(0, counter);
+  counter++;
+  return 1;
+}
+
+main() {
+  a(b());
+  Expect.equals(2, counter);
+}