(char-db-insert-char-ref): New function.

(char-db-insert-char-ref): New function.
(char-db-insert-char-map): New function.
(char-db-decode-isolated-char): New function.
(insert-char-attributes): Convert `->ucs' to `=>ucs'; use
``character-reference'' style for `->uppercase', `->lowercase',
`->titlecase'; omit `->titlecase' if its value has the same value of
`->uppercase'; output `->fullwidth', `<-fullwidth',
`->vulgar-ideograph', `<-vulgar-ideograph', `->ancient-ideograph',
`<-ancient-ideograph', `->same-ideograph' and `->bopomofo' as
``character-reference'' style; use `char-db-decode-isolated-char'.