== ISO 639 : 2 and 3 latter languag ecodes.

Process:

Download
  http://www.loc.gov/standards/iso639-2/php/English_list.php
This file is in ISO-8859-1

Run the perl script to produce the Java fragment
Convert to UTF-8

iconv --from-code=ISO-8859-1 --to-code=UTF-8 < IN > OUT

Check:

Gwich'in
Bokmċl, Norwegian
Provençal
Volapük
(this text file is ISO-8859-1)

Misc:

1/ There are duplicate 3-letter codes - take the first only.
2/ The "Undetermined" language code needs special handling