Add empty list_local_fs.dart for 1.2.1 (dart-lang/glob#64)

pkgs/glob/CHANGELOG.md

diff --git a/pkgs/glob/CHANGELOG.md b/pkgs/glob/CHANGELOG.md
index 1d60efb..98ab5c2 100644
--- a/pkgs/glob/CHANGELOG.md
+++ b/pkgs/glob/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.2.1
+
+* Add an empty list_local_fs.dart to ease upgrade from 1x to 2x
+
 ## 1.2.0
 
 * Support running on Node.js.

pkgs/glob/lib/list_local_fs.dart

diff --git a/pkgs/glob/lib/list_local_fs.dart b/pkgs/glob/lib/list_local_fs.dart
new file mode 100644
index 0000000..d59e216
--- /dev/null
+++ b/pkgs/glob/lib/list_local_fs.dart
@@ -0,0 +1,4 @@
+/// This file is intentionally empty. It exists to ease transition from 
+/// glob 1x to 2x. By having this file here you can add the import to
+/// it that provides backward compatibility in 2x while still on glob 1x.
+library list_local_fs;

pkgs/glob/pubspec.yaml

diff --git a/pkgs/glob/pubspec.yaml b/pkgs/glob/pubspec.yaml
index 7454ccd..0dd4062 100644
--- a/pkgs/glob/pubspec.yaml
+++ b/pkgs/glob/pubspec.yaml
@@ -1,5 +1,5 @@
 name: glob
-version: 1.2.1-dev
+version: 1.2.1
 
 description: Bash-style filename globbing.
 author: Dart Team <misc@dartlang.org>