[imp] search problem

[David Chang]

Hi all:
Imp search seems did not work for Chinese keyword.
See
http://210.241.49.67/~txg16/tmp/imp_search0.jpg
http://210.241.49.67/~txg16/tmp/imp_search1.jpg
http://210.241.49.67/~txg16/tmp/imp_search2.jpg

Related config are:
horde/config/nls.php
$nls['conf']['enable_utf'] = false;

IMAP Server are : cyrus-imapd-2.1.12

You can test my horde here:
http://210.241.49.70/horde.beta/test.php

David Chang