Sort packages by name before listing them.

utils/pub/command_list.dart

Index: utils/pub/command_list.dart
diff --git a/utils/pub/command_list.dart b/utils/pub/command_list.dart
index 973a4dedc48a7e41a72d928afbab7f4b578eed99..4476fac96d812a0245a206d391b2adfd47e18975 100644
--- a/utils/pub/command_list.dart
+++ b/utils/pub/command_list.dart
@@ -8,6 +8,7 @@ void commandList(PubOptions options, List<String> args) {
   // your cache.
   final cache = new PackageCache(options.cacheDir);
   cache.listAll().then((packages) {
+    packages.sort((a, b) => a.name.compareTo(b.name));
     for (final package in packages) {
       print(package.name);
     }