(U+5F98): Unify abstract J0-5751.

(U+5F98): Unify abstract J0-5751.
(J83-5751): Unify JX1-5751.
(J90-5751): Use `=jis-x0213-1@2000' instead of `=jis-x0213-1' for
JX1-5751.
(U+5FA7): Add `ideographic-structure'.
(J97-4427): Use `=>jis-x0208@1997' instead of `=jis-x0208@1997'.
(U+5FB4): Unify abstract JX1-4427.
(U+5FB5): Unify abstract JX1-7444.
(U+5FBD): Use `=>jis-x0208' and `=>jis-x0213-1' instead of
`=jis-x0208@1997'; add `sound@ja/on'.
(J78-352B): Move B-C0B2 to the parent node; unify JX3-352B; move
JC3-4DC1 to J90-352B.
(J90-352B): Use `=ucs@jis/1990' and `=ucs@jis/2000' instead of
`=ucs@jis'; use `=jis-x0213-1@2000' instead of `=jis-x0213-1' for
JX1-352B; unify JC3-4DC1; use `<-simplified@JP/jis' instead of
`<-simplified@JP' for J78-352B.