- (test-)supported languages are: ar de en es fr it pt; ru and zh are not part
  of them as I don't know which fonts / input methods are needed to properly
  support these languages
- install localization iceweasel's and openoffice.org's l10n packages for every
  supported language
- do most locale-dependent configuration at boot time rather than at build time
- ugly hacko to tweak generated syslinux configuration in order to add
  language-choosing menu, and remove failsafe entry for now; will need to be
  somehow re-added at some point