>> Based on the totality of the discussion so far, would the following
>> policy be the best?
>>
>> 1. make the build-time option selectable to install a dictionary with a
>>    reduced vocabulary
>> 2. install dictionaries without reduced vocabulary by default
>> 3. make it possible to regenerate dictionaries from make or Emacs
>>    command.
>
> I think 2+3 is the best.

I attached the v3 patch.