Change a wording and fix a typo in the po header, in Japanese translation.
-rw-r--r-- 35147 COPYING
-rw-r--r-- 4440 Makefile
-rw-r--r-- 14 VERSION
drwxr-xr-x - backend
drwxr-xr-x - components
drwxr-xr-x - debian
drwxr-xr-x - frontend
drwxr-xr-x - manpages