Attached to the mail is locale-patch.tar.gz. In the archive
   there are:

file README.locale
   short description

directory src/test/locale
   test suite; currently only koi8-r tests, but the suite can be
   easily extended

file locale.patch
   the very patch; to apply: patch < locale.patch; should be applied
   to postgres-6.3.2 (at least I created it with 6.3.2 without any
additional
   patches)

   Files touched by the patch:  src/include/utils/builtins.h
src/backend/utils/adt/char.c src/backend/utils/adt/varchar.c
src/backend/utils/adt/varlena.c

Oleg