[Windows] Investigate whether we can bundle better Polish aspell dictionary
It has two problems:
- It is big. GG10 also also has a dictionary but 6 times smaller.
- It is probably out-of-date. See: http://www.kadu.im/forum/viewtopic.php?f=7&t=11220 Junior job: 1
(from redmine: created on 2011-09-15, closed on 2012-02-19)