Corrected the chronograph on my time machine. ``using`` argument was added in...

Corrected the chronograph on my time machine. ``using`` argument was added in v1.2, not v1.1. Thanks to Ramiro Morales for the report.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12120 bcc190cf-cafb-0310-a4f2-bffc1f526a37