Use multi-byte subject in osTicket

osTicket uses iso-8859-1 to encode a subject on sending mail, it gets garbled if it uses characters outside iso-8859-1. To make it use utf-8, apply this patch.

diff -ur osticket_1.6.0.orig/upload/include/class.email.php osticket_1.6.0/upload/include/class.email.php
--- osticket_1.6.0.orig/upload/include/class.email.php       2010-02-25 20:15:48.000000000 +0000
+++ osticket_1.6.0/upload/include/class.email.php   2011-10-26 07:15:52.000000000 +0000
@@ -175,6 +175,7 @@
         $options=array('head_encoding' => 'quoted-printable',
                        'text_encoding' => 'quoted-printable',
                        'html_encoding' => 'base64',
+                       'head_charset'  => 'utf-8',
                        'html_charset'  => 'utf-8',
                        'text_charset'  => 'utf-8');
         //encode the body