You might consider setting the locale etc. to get localised strings. However this was considered before and discounted as overkill: http://lists.gnu.org/archive/html/bug-coreutils/2010-01/msg00060.html
Personally I use this in my ~/.bashrc
strerror() { python -c "\
import os,locale as l; l.setlocale(l.LC_ALL, ''); print os.strerror($1)"; }
cheers,
Pádraig.
