Use strings not unicode in changelog generator

* bin/git2gch: Python 3000 treats strings as unicode by default, so we
should too.

diff --git a/bin/git2gch b/bin/git2gch
index a7d9017..8956141 100755 (executable)
--- a/bin/git2gch
+++ b/bin/git2gch
@@ -1,8 +1,8 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-u"""Generates potential ChangeLog file contents from commit messages."""
+"""Generates potential ChangeLog file contents from commit messages."""
 
-# Copyright (c) 2010 Jeremy Stanley <fungi@yuggoth.org>. Permission
+# Copyright (c) 2010-2011 Jeremy Stanley <fungi@yuggoth.org>. Permission
 # to use, copy, modify, and distribute this software is granted under
 # terms provided in the LICENSE file distributed with this software.