(A-M-29237): Unify A-UU+2EBC and A-GT-37857 instead of o-GT-37857;

(A-M-29237): Unify A-UU+2EBC and A-GT-37857 instead of o-GT-37857;
apply new conventions for glyph granularity.
(BC-8A73): Apply new conventions for glyph granularity.
(<CJK RADICAL MEAT>): Add `<-identical@component/connect-right' for
BC-8A73.
(BC-8958): Add `<-identical@component/connect-above' for BC-8A73.
(BC-88F0): Apply new conventions for glyph granularity.
(U+808A): Likewise.
(BC-8C4F): Likewise.
(U+8090): Likewise.
(U+8095): Likewise.
(U+8096): Likewise.
(U+80B2): Likewise.
(U-0002664D): Use `->subsumptive'.
(U+80D6): Apply new conventions for glyph granularity.
(U+80DE): Likewise.
(U-0002668D): Likewise.
(BC-8CA9): Add ideographic-structure.
(U+80F3): Apply new conventions for glyph granularity.
(U+810A): Likewise.
(U-00026778): Likewise; unify BC-85C4.
(U-00026803): Use `->subsumptive'.
(U+81C6): Apply new conventions for glyph granularity.
(U+81C8): Likewise.
(U+4445): Likewise.
(U-00024443): Likewise.
(U-00026883): Likewise.
(U+81D7): Likewise.
(U-000268BD): Likewise.