dart2js: Fix of deferred static functions.

tests/language/deferred_static_seperate_lib2.dart

+// Copyright (c) 2014, 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.
+
+library lib2;
+
+import "package:expect/expect.dart";
+import "deferred_static_seperate_lib1.dart";
+
+foo() {
+  Expect.equals(1, C.foo());
+  Expect.mapEquals({}, C1.foo);
+
+  Expect.mapEquals({1: 2}, C2.foo);
+  C2.foo = {1: 2};
+  Expect.mapEquals({1: 2}, C2.foo);
+
+  Expect.equals(x, C3.foo);
+  Expect.mapEquals({x: x}, C4.foo);
+  Expect.listEquals([const{1: 3}], C5.foo);
+
+}