(U+7811): Apply new conventions for glyph granularity; delete

(U+7811): Apply new conventions for glyph granularity; delete
`japanese-strokes'.
(U-0002543C): Unify M-24077.
(U-00025469): Apply new conventions for glyph granularity.
(U-0002545A): Likewise.
(U-00025468): New character.
(U+7847): Add `sound@ja/on/{kan|go}'; add `<-formed' for U-00020B26;
add `->formed' for U-0002545A, U-00020B26, U-00023CBF, U-00025469,
U-0002543C and U-000254C1.
(U-000254C1): Unify MJ042804 and KOSEKI-270710; add `<-formed' for
U+7847; add `<-same' for U+7847.
(U+7890): Apply new conventions for glyph granularity.
(U-00025553): Use `->denotational' and `->subsumptive'.
(U+40E9): Apply new conventions for glyph granularity.
(U+791C): Delete `japanese-strokes'.
(M-24614): Unify U-000255F5.
(U-000255F8): Use `->subsumptive'; unify MJ042956 and KOSEKI-274820.
(U-000255F7): Apply new conventions for glyph granularity.