Fix XCObject._EncodeString() for unicode characters.

test/mac/unicode-settings/test_bundle_display_name.sh

Index: test/mac/unicode-settings/test_bundle_display_name.sh
diff --git a/test/msvs/external_builder/hello.z b/test/mac/unicode-settings/test_bundle_display_name.sh
old mode 100644
new mode 100755
similarity index 75%
copy from test/msvs/external_builder/hello.z
copy to test/mac/unicode-settings/test_bundle_display_name.sh
index aa478827b50f552feae808e98e83275669ffa808..4680931c20f4e4b5a79d575b4020ee7d88f293d0
--- a/test/msvs/external_builder/hello.z
+++ b/test/mac/unicode-settings/test_bundle_display_name.sh
@@ -1,6 +1,6 @@
+#!/bin/bash
 # Copyright (c) 2013 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-This file will be passed to the test rule.
-
+test "${BUNDLE_DISPLAY_NAME}" = 'α	'