Getting Gnome to use the new de_AT.ISO8859-15 locale

Yesterday in the my blog, I described how to get the missing locale de_AT.ISO8859-15 back in OpenSolaris Build 101.
But after the boot today, Gnome still had the UTF-8 locale in use.

So I had to add the new locale in /etc/X11/gdm/locale.alias
German(Austria) de_AT.UTF-8,de_AT
German(AustriaISO8859-15) de_AT.ISO8859-15,de_AT
After logout, changing the Language in the GDM-Login screen and login, the
locale is now the de_AT.ISO8859-15.