RFC: How to translate help topics.

[Alexander Belchenko]

INADA Naoki пишет:
>> If the help topics are translated in text files in the branch,
>> translators can pretty easily run a diff and fix their translations.
> 
> If we take this approach, we should provide a way to manage
> which translate text is based on which version of original text.

That's a very good point against plain txt files. We'll need some sort
of md5/sha for every translation. That very quickly will go out of
control.