Freezing a single model does not work

[jbar@…]

datamigration --freeze=auth.User

does not work. It prints

You cannot freeze 'auth.User'; you must provide an app label, like 'auth' or 'books'.

It worked in 0.6. I can still freeze the whole application though:

datamigration --freeze=auth

I have no problem with freezing the whole application this time but the error message suggests it should work.

[andrew]

The new datamigration only lets you freeze whole apps (since most of the time you really will want them all, and it simplifies the code a great deal).

I've updated the help for the command a little to make it clear it's only app names now.