Fix homepage.

setup.py

@@ -11,7 +11,7 @@ setup(name='dulwich',
       description='Pure-Python Git Library',
       keywords='git',
       version=dulwich_version_string,
-      url='http://launchpad.net/dulwich',
+      url='http://samba.org/~jelmer/dulwich',
       download_url='http://samba.org/~jelmer/dulwich/dulwich-%s.tar.gz' % dulwich_version_string,
       license='GPLv2 or later',
       author='Jelmer Vernooij',