Log Message:
Update to 14.4

Changelog:
* Simplify skk-isearch
* Add some menu items
* Display input mode indicator near cursor position
* Get annotation from DictionaryServices on Mac OS X
* Get annotation from other program
* Make $ behavior changable
* Remove some combination from skk-azik.el
* Improve Tan-Kanji transform
* Add skk-search-web.el
* Other bugfixes