(U+7528): Add `<-denotational@usage' for BUCS+7528; apply new

(U+7528): Add `<-denotational@usage' for BUCS+7528; apply new
conventions for glyph granularity.
(UU+7528): Unify DJT-07469.
(U+7528-var-004): New character; use `<-denotational' for U+7528.
(U-00031C1C): New character.
(U+752C): Add `ideographic-structure'.
(UU+752C): Unify DJT-07471.
(MJ058080): New character; use `<-denotational' for U+752C.
(U-000200F0): Apply new conventions for glyph granularity.
(U-00024C07): Add ideographic-structure.
(M-21714): Unify MJ041331 and KOSEKI-243510.
(U+24C07-var-005): New character; use `<-denotational' for U-00024C07.
(U-000308B1): New character.
(u-00024C08): Add `<-denotational@usage' for A2-DJT-07476; add
ideographic-structure.
(U-0002DEBA): Apply new conventions for glyph granularity.
(U-00024C0F): Add `sound@ja/on'.
(M-21721): Add `<-denotational' for U-00024C0F.
(MJ041336): New character; use `<-denotational' for U-00024C0F.
(BUCS+7528): New abstract node; unify A2-DJT-07469.
(BUCS+752C): Unify A2-DJT-07471.
(A2-DJT-07476): New abstract node.