(Vcharset_mojikyo_2022_1): New variable.

(Vcharset_mojikyo_2022_1): New variable.
(LEADING_BYTE_MOJIKYO_2022_1): New macro.
(LEADING_BYTE_MOJIKYO_2022_2): New macro.
(CHARSET_TYPE_94): Deleted.
(CHARSET_TYPE_94X94): Deleted.
(CHARSET_TYPE_96): Deleted.
(CHARSET_TYPE_96X96): Deleted.
(CHARSET_TYPE_128): Deleted.
(CHARSET_TYPE_128X128): Deleted.
(CHARSET_TYPE_256): Deleted.
(CHARSET_TYPE_256X256): Deleted.
(CHARSET_BY_ATTRIBUTES): New implementation and interface; changed to
inline function.
(DECODE_MOJIKYO_2022): New inline function.
(DECODE_CHAR): Use `DECODE_MOJIKYO_2022'; decode
`Vcharset_mojikyo_2022_1'.