[1.0.X] Fixed #9717 -- Corrected a problem where django-admin.py flush would...

[1.0.X] Fixed #9717 -- Corrected a problem where django-admin.py flush would attempt to flush database tables that had not yet been created. This occurred when an application had been added to INSTALLED_APPS, but had not yet been synchronized. Thanks to Julien Phalip for the patch.

Merge of [9535] from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9536 bcc190cf-cafb-0310-a4f2-bffc1f526a37