Fixed #17584 -- Updated create_template_postgis-debian.sh script for...

Fixed #17584 -- Updated create_template_postgis-debian.sh script for PostgreSQL 9.1 installs. Thanks akaihola for the initial patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@17706 bcc190cf-cafb-0310-a4f2-bffc1f526a37