Some APIs (e.g. GetSystemPreferredUILanguages()) return them as a string
so the case should match the one used by Windows in case developers used
case sensitive string comparisons (e.g. as in advapi32:lsa)
Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>