(U+7890): Use `->denotational' and `->subsumptive'.

(U+7890): Use `->denotational' and `->subsumptive'.
(U+7891): Use `->denotational'.
(U+FA4B): Add `<-denotational' for U+7891; unify UU+7891 and JU+FA4B.
(U+78C1): Add S1-5455.
(J0-486A): Add `<-denotational' for U+7891.
(U+40E3): Use `->denotational'.
(U-0002F951): Add `<-denotational' for U+40E3; use `->denotational'.
(M-24475): Use `<-denotational' for U-0002F951.
(C3-4842): Use `<-denotational' for U+40E3.
(C7-396D): Use `<-denotational' for U-0002F951; unify IU-0002F951.
(U+78F3): Use `->denotational'.
(U+40E4): Use `->subsumptive'.
(U+7900): Likewise.