(A-IWDSU+4E8F): Add `<-denotational@component' for A-compU+4E8F; omit

(A-IWDSU+4E8F): Add `<-denotational@component' for A-compU+4E8F; omit
`<-denotational@usage' for BUCS+4E8E.
(U+4E8F): Add `<-denotational@usage' for BUCS+4E8E and BUCS+8667; add
`<-simplified@CN' for UU+8667.
(U+4E90): Add `<-denotational@component' for A-compU+4E90; add
`<-denotational@usage' for BUCS+4E8E; apply new conventions for glyph
granularity.
(A-compU+4E90): New abstract node; use `<-denotational@component' for
A-compU+4E8F.
(U+4E90-var-001): New character; use `<-denotational@component' for
A-compU+4E90.
(A-compU+4E8F): New abstract node.