(U+5912): Use A-IWDSU+9801 instead of U+9801 in

(U+5912): Use A-IWDSU+9801 instead of U+9801 in
`ideographic-structure'; add `sound@ja/on/{kan|go}'.
(CU+5912): Add `ideographic-structure'; unify HD-KS065780 and
KOSEKI-065780; add some relations for other characters.
(U+5912-var-003): Use U-0002944B instead of U+9801 in
`ideographic-structure'.
(U+5912-var-004): Likewise.
(U+5912-var-001): New character; use `<-denotational' for U+5912.
(UU+5912): Add `ideographic-structure'.
(JU+5912): Use U-0002944B instead of U+9801 in
`ideographic-structure'.
(U+5914): Add `sound@ja/on/{kan|go}'.
(MJ009427): Add `->mistakable' for CU+5912.