Description:
------------
http://bugs.mysql.com/bug.php?id=8420&thanks=2&notify=7

Windows version of PHP 4.x.x
compiled with old libmysqlclient - 3.xx.xx. Moreover, it has hardcoded path to mysql charset dir.



Reproduce code:
---------------
<?php 
$link = mysql_connect('localhost:3307', 'root', ''); 
$set = mysql_query('SET NAMES CP1251',$link);
$set = mysql_query('SET COLLATION_CONNECTION=CP1251_GENERAL_CI',$link);
$charset = mysql_client_encoding($link); 
printf ("current character set is %s\n", $charset); 
?>
echoes 
"File 'c:\mysql\share\charsets\?.conf' not found (Errcode: 22)
Character set '#51' is not a compiled character set and is not specified in the
'c:\mysql\share\charsets\Index' file
current character set is latin1"

There is an obvious bug in every win32 distribution of MySQL 4.1.x.

There is no sense to setting such options as:
character-sets-dir=c:/mysql/share/charsets 
default-character-set=cp1251

In any case as result - something like this:
File 'c:\mysql\share\charsets\?.conf' not found (Errcode: 22)
Character set '#51' is not a compiled character set and is not specified in the
'c:\mysql\share\charsets\Index' file