bug 251241 : zh-Hant and zh-Hans are treated as zh-CN (r=smontagu, sr=neil)

intl/locale/src/langGroups.properties

@@ -162,6 +162,11 @@ yi=he
 #Latin Ext. A and Latin Extended Additional block are used for Yoruba. 
 #yo=x-western 
 zh-cn=zh-CN
+# XXX : The following two entries are added as a quick fix (bug 251241).
+# When we have a general solution for ISO 15924 (script codes), the issue has
+# to be revisited.
+zh-hans=zh-CN
+zh-hant=zh-TW
 zh-tw=zh-TW
 zh-hk=zh-HK
 zh=zh-CN