Fix some warnings in pub and pkg packages.

pkg/intl/example/basic/messages_de.dart

Index: pkg/intl/example/basic/messages_de.dart
diff --git a/pkg/intl/example/basic/messages_de.dart b/pkg/intl/example/basic/messages_de.dart
index d18c98113972cc84dd97e6ed10c3441b512905fa..7110088a6e6573b6915a3a8293201cd2d52c1054 100644
--- a/pkg/intl/example/basic/messages_de.dart
+++ b/pkg/intl/example/basic/messages_de.dart
@@ -17,6 +17,8 @@ class MessageLookup extends MessageLookupByLibrary {
 
   get localeName => 'de';
 
+  bool localeExists(localeName) => null;

[Alan Knight, 2013/04/18 19:42:25]

In normal usage these will be generated files, so just adding the method here
probably doesn't help. Looking at this more closely, I think that the abstract
method in the superclass is in fact unused, and can be removed.

[nweiz, 2013/04/18 19:59:23]

Done.

[Alan Knight, 2013/04/18 20:07:18]

Then they also should be deleted from this and the _de file.

+
   final messages = {
     "runAt" : (time, day) => Intl.message("Ausgedruckt am $time am $day.")
   };