[1.2.X] Fixed #15359 -- Ensure that the -h option is always honored by...

[1.2.X] Fixed #15359 -- Ensure that the -h option is always honored by django-admin.py. Thanks to teubank for the report.

Backport of r15605 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15609 bcc190cf-cafb-0310-a4f2-bffc1f526a37