(A-GT-K04772): New abstract node.

(A-GT-K04772): New abstract node.
(GT-K04772): New character.
(U+5815): Add `<-denotational@usage' for BUCS+58AE; add
`ideographic-structure'.
(UU+5815): Delete `=>ucs@iwds-1'.
(U+585E): Add `<-denotational@usage' for BUCS+585E.
(U+58AE): Apply new conventions for glyph granularity; add
`<-denotational@usage' for BUCS+58AE.
(U-00021426): Likewise.
(U+58AF): Apply new conventions for glyph granularity.
(U-00021491): New character.
(U-0002D404): Apply new conventions for glyph granularity.
(BUCS+58AE): New abstract node; unify A2-DJT-01863.
(BUCS+585E): New abstract node; unify A2-DJT-01823.