(U+4EE4): Use A-compU+5369 instead of U-0003018A as a component.

(U+4EE4): Use A-compU+5369 instead of U-0003018A as a component.
(U+4EE4-var-002): New character; use `<-denotational' for U+4EE4.
(A-U+5917-itaiji-002): New abstract node.
(U+5917-itaiji-002): New character; use `<-denotational' for
A-U+5917-itaiji-002.
(U-00020222): Add `<-denotational@usage' for A2-DJT-03245; add
`ideographic-structure'; add `sound@ja/on'.
(IU+20222): Add `<-ancient' for UU+6028.