KOI8-U support (was Re: [BUGS] create database warning)

Peter Eisentraut wrote:
> Mykola Stryebkov wrote:
>> template1=# create database inf with encoding 'windows-1251';
>> WARNING: could not determine encoding for locale "uk_UA.KOI8-U":
>> codeset is "KOI8-U"
>> DETAIL: Please report this to <pgsql-bugs(at)postgresql(dot)org>.
>> CREATE DATABASE
>> template1=#
>>
>> What's wrong with it?
>
> PostgreSQL does not support the KOI8-U encoding. You could try to use
> uk_UA.utf8.

We get these complaints about missing KOI8-U support once in a while.
Attached is a patch to add KOI8-U support with UTF-8 conversion. It
should be enough to help this class of users, but more fancy features
such as conversion between KOI8U and KOI8R or KOI8U and various WIN
encodings is not there yet. I propose to add this patch to PostgreSQL 8.4.

Mykola, if you have a 8.3 or 8.4 source code lying around, please test
this patch.