Fixed #15662 -- Made sure the module_has_submodule utility function follow correct PEP 302, passing the package as the second argument to the find_module method of the importer. Thanks, Bradley Ayers.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@16075 bcc190cf-cafb-0310-a4f2-bffc1f526a37