[1.1.X] Fixed #12913. Fields with choices now respect show_hidden_initial as a...

[1.1.X] Fixed #12913. Fields with choices now respect show_hidden_initial as a keyword argument to formfield. Backport of r12696 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12697 bcc190cf-cafb-0310-a4f2-bffc1f526a37