ICA AtoM create en_AU locale see results in https://gist.github.com/kehh/5242861

add_en_AU_make_query.sql

select concat ("update `", table_name, "` set ", column_name, " = 'en_AU' where ", column_name, " =     'en';") as 'BEGIN;' from information_schema.columns where column_name = 'source_culture' and table_name not in ('taxonomy', 'term', 'setting', 'loan');
select 'SHOW WARNINGS;';
select concat("delete from `", table_name, "` where culture = 'en_AU'; replace into `", table_name,"`   (",  group_concat(column_name), ", culture) select ", group_concat(column_name), ", 'en_AU' as culture  from `", table_name, "` where culture = 'en';") as 'begin;' from information_schema.columns where       table_schema='qubit' and table_name like '%i18n' and column_name != 'culture' group by table_name order by table_name, column_name;
select 'SHOW WARNINGS;';
select 'COMMIT;';

you can load this by running something like
mysql -umysql_user -pmysqlpass qubit_db < add_en_AU_make_query.sql |mysql -umysql_user -pmysqlpass qubit_db
but entering the correcct value for mysql_user, mysqlpass, qubit_db (or setting those in your my.cnf file)