Additionally, split option handling into options.mk and properly handle
the configuration file.
Changelog in anthy(7100 to 7900):
* Fix Japanese convert algorithm
* Update main Japanese Kana-Kanji dictionary
Changelog in pkgsrc:
* Fix option for additional Kana-Kanji dictionary.
* Update Okinawa dicrectory(optional).
ChangeLog:
* cannadic/ update to cannadic-0.95c
* src/splitter/commit.c fix mis-computation of segment length which
can cause out of array bound access
* use Hidden Markov Model to find segment boundary.