Add async initialization for Intl.message and an example

pkg/pkg.status

 # 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.
 
 # Run this test manually to verify that the fixnum library produces
 # the same results as native ints on a set of directed and random inputs.
 # Skip it when runnimng automated tests because it times out.  This
 # test only makes sense on runtimes that support 64-bit integer
 # arithmetic natively, i.e., the VM.
 fixnum/test/int_64_vm_test: Skip
 
 [$compiler == dart2dart]
 *: Skip
 
 [ $runtime == opera ]
 *: Skip
 
 # Skip tests that use local file access if we're running in any browser
 [ $runtime == opera || $runtime == ff || $runtime == ie || $runtime == dartium || $runtime == chrome || $runtime == safari || $runtime == drt ]
 intl/test/date_time_format_file_even_test: skip
 intl/test/date_time_format_file_odd_test: skip
 
-# Skip tests that force dartc to compile dart:io, which seems to be hopelessly
-# broken
-[ $compiler == dartc]
-intl/test/date_time_format_file_test: skip
-intl/test/date_time_format_file_even_test: Fail # issue 5143
-intl/test/date_time_format_file_odd_test: Fail # issue 5143
+# Skip intl_message tests that use mirrors on dart2js until it's been implemented there.
+[ $compiler == dart2js ]
+intl/test/intl_message_test: skip
+intl/test/intl_message_basic_example_test: skip
 
 [ $compiler == dartc ]
 unittest/test/mock_regexp_negative_test: fail
 unittest/test/mock_stepwise_negative_test: fail
 
 [ $compiler == dart2js || $compiler == dartc ]
 unittest/test/instance_test: Skip