Fixed #7914 -- Added some missing __init__.py files that were missed when the...

Fixed #7914 -- Added some missing __init__.py files that were missed when the ping_google command was added. Thanks to bernd for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8062 bcc190cf-cafb-0310-a4f2-bffc1f526a37