Fixed #943 -- Restored django-admin createsuperuser functionality with no arguments. Thanks, deric

git-svn-id: http://code.djangoproject.com/svn/django/trunk@1477 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/bin/django-admin.py

@@ -84,8 +84,12 @@ def main():
         try:
             username, email, password = args[1], args[2], args[3]
         except IndexError:
+            if len(args) == 1: # We got no arguments, just the action.
+                ACTION_MAPPING[action]()
+            else:
                 sys.stderr.write("Error: %r requires arguments of 'username email password' or no argument at all.\n")
                 sys.exit(1)
+        else:
             ACTION_MAPPING[action](username, email, password)
     elif action in ('init', 'validate'):
         ACTION_MAPPING[action]()