[1.0.X] Fixed #9122: generic inline formsets now respect exclude and max_num....

[1.0.X] Fixed #9122: generic inline formsets now respect exclude and max_num. Thanks, Alex Robbins. Backport of [10586] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@10587 bcc190cf-cafb-0310-a4f2-bffc1f526a37