adding all charsets used by SM translations to default_charset selection list

plugins/administrator/defines.php

@@ -304,13 +304,18 @@ $defcfg = array( '$config_version' => array( 'name' => _("Config File Version"),
                                               'posvals' => array( 'iso-8859-1' => 'iso-8859-1',
                                                                   'iso-8859-2' => 'iso-8859-2',
                                                                   'iso-8859-7' => 'iso-8859-7',
+                                                                  'iso-8859-9' => 'iso-8859-9',
                                                                   'iso-8859-15' => 'iso-8859-15',
-                                                                  'iso-8859-15' => 'iso-8859-15',
-                                                                  'ns_4551_1' => 'ns_4551_1',
+                                                                  'utf-8' => 'utf-8',
                                                                   'koi8-r' => 'koi8-r',
-                                                                  'euc-KR' => 'euc-KR',
+                                                                  'euc-kr' => 'euc-kr',
+                                                                  'big5' => 'big5',
+                                                                  'gb2312' => 'gb2312',
+                                                                  'tis-620' => 'tis-620',
                                                                   'windows-1251' => 'windows-1251',
-                                                                  'ISO-2022-JP' => 'ISO-2022-JP' ) ),
+                                                                  'windows-1255' => 'windows-1255',
+                                                                  'windows-1256' => 'windows-1256',
+                                                                  'iso-2022-jp' => 'iso-2022-jp' ) ),
                  '$show_alternative_names'  => array( 'name' => _("Show alternative language names"),
                                                       'type' => SMOPT_TYPE_BOOLEAN ),
                  '$available_languages' => array( 'name' => _("Available languages"),