Tasks not to forget before release:

- Update ABOUT-NLS and doc/matrix.texi with information from Francois Pinard's
  Translation Project.

- Update config.guess and config.sub from ftp://ftp.gnu.org/pub/gnu/config/.
- Update intl/locale.alias from glibc's intl/locale.alias.
- Update {lib,intl}/{localcharset.c,config.charset} from libcharset inside
  libiconv.

- Update djgpp/*.

- Update -version-info arguments in intl/Makefile.in.
  * increment LTV_REVISION,
  * if any functions/classes have been added, removed or changed, increment
    LTV_CURRENT and set LTV_REVISION to 0,
  * if any functions/classes have been added, increment LTV_AGE,
  * if backwards compatibility has been broken, set LTV_AGE to 0.

- Bump version number and release date in configure.in.