[1.0.X] Fixed #9789 -- Handle jython's compiled settings filename correctly.

Patch from Frank Wierzbicki.

Backport of r9775 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9776 bcc190cf-cafb-0310-a4f2-bffc1f526a37