Objects with FileFields no longer get save() called multiple times from the AutomaticManipulator! This fixes #639, #572, and likely others I don't know of.  

This may be slightly backwards-incompatible: if you've been relying on the multiple-save behavior (why?), then you'll no longer see that happen.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@4609 bcc190cf-cafb-0310-a4f2-bffc1f526a37