(U+7070): Add ideographic-structure.

(U+7070): Add ideographic-structure.
(JU+7070): Unify BC-8D7D.
(U+710A): Use `->subsumptive'.
(U-00024253): New character.
(A-IWDSU+2427A): New abstract node; unify A-M-19156.
(U-0002427A): Use `->subsumptive'; add `<-denotational' for
A-IWDSU+2427A.
(U-000242AE): Apply new conventions for glyph granularity; add
`<-denotational' for A-IWDSU+2427A.
(U-000242A3): New character.
(U+71C5): Apply new conventions for glyph granularity.
(U-000243AD): Use `->denotational' and `->subsumptive'.
(U+3E11): Likewise.