Fixed #8673: fixed a missing import in `django.core.files.move`.
Fixed #8673: fixed a missing import in `django.core.files.move`.

git-svn-id: 554f83ef17aa7291f84efa897c1acfc5d0035373@8720 bcc190cf-cafb-0310-a4f2-bffc1f526a37

svn2github/django,svn2github/django,svn2github/django