addition of az_IR or azb_IR locale

[Mousa Moradi]

Dear libc maintainers,

I would like to request addition of South Azerbaijani language locale  
(Azerbaijani language with Arabic script which is being used in Iran by 
more than 15 million speakers). The original bug is issued here 
(https://sourceware.org/bugzilla/show_bug.cgi?id=14172) two years ago.

There is a debate whether the 2-letter code (az) is appropriate or 
3-letter code (azb). Although I think the 2-letter code, together with 
the country code (az_IR) implies the south Azerbaijani language and 
suffices, but using azb_IR also is not incorrect. I have prepared both 
locale files in the addressed bug report and you can add each one you 
see more suitable.

Thanks so much in advance,
Best Regards,

-- 
Mousa Moradi
Software Developer
Pactos Inc.
http://mousa.me