Hi,
great news.
But you don't have to create three files. When you use e.g. CP1250 I can convert it automatically into UTF-8 (or vice versa). So only one source file is required the rest is done by a script
You can check SVN on joomlacode.prg. In the language.utf8 folder you will find iconv.exe, the tool I use to convert all language files into UTF8.