dart2js: Fix of deferred static functions.

tests/language/deferred_static_seperate_test.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.
+
+// The class lib1.C is referenced via lib1
+// The static function lib1.C.foo is referenced via lib2
+// Dart2js will put them in seperate hunks.
+// Similarly for C2, ..., C5.
+
+import "package:expect/expect.dart";
+import "deferred_static_seperate_lib1.dart" deferred as lib1;
+import "deferred_static_seperate_lib2.dart" deferred as lib2;
+
+void main() {
+  lib1.loadLibrary().then((_) {
+    lib2.loadLibrary().then((_) {
+      Expect.equals(1, new lib1.C().bar());
+      var x = new lib1.C2();
+      Expect.mapEquals({1: 2}, x.bar);
+      x.bar = {2: 3};
+      Expect.mapEquals({2: 3}, x.bar);
+
+      Expect.equals(lib1.x, new lib1.C3().bar);
+      Expect.mapEquals({lib1.x: lib1.x}, new lib1.C4().bar);
+      Expect.equals(1, new lib1.C5().bar());
+
+      lib2.foo();
+    });
+  });
+}