The package appears to ship locales for a language but uses an unknown locale code as a subdirectory of /usr/share/locale. This usually results in users of the intended target language not finding the locale. The language codes used in the locale directories are those from the ISO 639-1 and ISO 639-2 standards, not those usually used as TLDs (which are from the ISO 3166 standard).
It is possible that the language code was mistyped or incorrectly guessed from the language's or country's name.
Refer to http://www.loc.gov/standards/iso639-2/php/code_list.php for details.