Let that be somewhat configurable.
Fix all documentation to refer to the right location for dictionaries.
Fix the install-script so that it can take care of all three languages at
once.
Let un-installation instructions be more helpful, explaining about usr
data.
(so that dictionaries install into /var/dict).
Note that ja-Wnn and ja-Wnn-dict do not depend on each other.
The installation `polish' script in Wnn-data should know how to take
care of that.
