* Change all maintainer scripts to not ever faile despite set -e. LP: #1005555, LP: #1044690 * Change all maintainer scripts to use a 4 space indent rather than tabs. * Change all maintainer scripts to use sh -e rather than explicit set -e. * Change all maintainer scripts to explicitly exit with 0 on end. * Change all maintainer scripts to use single line if;then. * Remove usage comments from all maintainer scripts.