Use `->subsumptive' for some characters.

Use `->subsumptive' for some characters.
(U+706F): Use `->subsumptive'; add `<-simplified@ucs' for U+71C8.
(U+7089): Use `->denotational' and `->subsumptive'; add
`<-simplified@ucs' for U+7210.
(C6-3248): Move U-0002F91A to parent.
(U+70B9): Add `<-simplified@CN' for U+9EDE; add `<-simplified@ucs' for
U+9EDE.
(U-000241C7): Use `->denotational' and `->subsumptive'.
(J90-4079): Use `<-simplified@JP/misc' instead of `<-simplified@JP'
for J78-4079.
(J90-407A): Use `<-simplified@JP/misc' instead of `<-simplified@JP'
for K0-6043.
(U+71D6): Use `->denotational' instead of `->subsumptive'.
(U+71D7): Add `<-denotational' for J97-5F73.
(J97-5F73): New abstract character.
(U-000243D0): Add `<-denotational' for J97-5F73.