Reapply r9192 and 9194, with the change of making locale a public field.

lib/i18n/intl_message.dart

Index: lib/i18n/intl_message.dart
===================================================================
--- lib/i18n/intl_message.dart	(revision 9195)
+++ lib/i18n/intl_message.dart	(working copy)
@@ -7,10 +7,10 @@
  *
  *
  * _message example:
- *    '''I see ${Intl.plural(num_people,
- *             {'0': 'no one at all',
- *              '1': 'one other person',
- *              'other': '$num_people other people'})} in $place.''''
+ *     '''I see ${Intl.plural(num_people,
+ *               {'0': 'no one at all',
+ *                '1': 'one other person',
+ *                'other': '$num_people other people'})} in $place.''''
  *
  * Usage examples:
  *      today(date) => intl.message(
@@ -29,14 +29,11 @@
  *
  * Calling `msg({'num_people': 2, 'place': 'Athens'});` would
  * produce "I see 2 other people in Athens." as output.
- * <!-- TODO(efortuna): documentation example involving the offset parameter.
- * -->
  *
  * See tests/message_format_test.dart for more examples.
  */
+ //TODO(efortuna): documentation example involving the offset parameter?
 
-#library('intl_message');
-
 class IntlMessage {
 
   /** String describing the use case for this message. */