Fix a bug that the default value of --po-dir isn't expanded
Fix a bug that the default value of --po-dir isn't expanded

jreinert/yard,ohai/yard,iankronquist/yard,thomthom/yard,alexdowad/yard,amclain/yard,thomthom/yard,jreinert/yard,lsegal/yard,thomthom/yard,ohai/yard,herosky/yard,ohai/yard,alexdowad/yard,iankronquist/yard,lsegal/yard,jreinert/yard,lsegal/yard,alexdowad/yard,amclain/yard,herosky/yard,amclain/yard,iankronquist/yard,herosky/yard