[ping][BZ #15608, 15609, 15610, 15681] New TW locales

[Wei-Lun Chao]

Those languages are listed by Transifex:
<http://www.transifex.com/languages/>

2013/8/20 Wei-Lun Chao <bluebat@member.fsf.org>:
> The requests for nan_TW, cmn_TW, hak_TW and lzh_TW are based on:
> http://www-01.sil.org/iso639-3/documentation.asp?id=zho
>
> They are hidden behind the macro-language "zh".
> There are many native speakers of each language(except "lzh").
> "gan","hak","lzh","cdo","nan","wuu","yue" are supported by Wikipedia.
> "yue_HK" and "nan_TW@latin" are already supported by GLIBC.