small i18n additions, fixes

Please hold off on adding the DISTRIBUTION commit. I have only tested 'make ar71xx DISTRIBUTION=true' as a full build on Mac OS X. Compiling on in an Ubuntu 12.04 32-bit VM revealed find | xargs issues that I haven't tested out yet.

And thanks for whatever you did to address the NLS issue I had on Mac OS X in ar71xx.

FYI: just as on Mac OS X 10.6.8 64-bit, the Ubuntu compiled with 6 threads without issue.