As I wrote I've found that there is a mess in wine with the usage of SUBLANG_NEUTRAL and SUBLANG_DEFAULT. I tried to understand when to use which and wrote a wiki page about it: http://wiki.winehq.org/SublangNeutral . It contains some generic information about it but I thought that it would be best to have also a list of languages for each case. I've took the wine languages list and sorted the obvious cases. There are however 7 languages which have many sublangs and I don't know if they should have one generic translation or be translated into each sublang. If someone knowing one of these languages could Cut&Paste the language from the "undecided" list to one of the lists, I think it would help.
Mikolaj Zalewski