(U-0002022F): Fix `ideographic-structure'; add `<-ancient' for U+5175.

(U-0002022F): Fix `ideographic-structure'; add `<-ancient' for U+5175.
(IU+2022F): Fix `ideographic-structure'.
(A-IWDSU+4FFE): New abstract node.
(U-00020237): Add `<-denotational' for A-IWDSU+4FFE; apply new
conventions for glyph granularity.
(U+4FFE): Likewise.
(A-IWDSU+501A): New abstract node.
(U+501A): Add `<-denotational' for A-IWDSU+501A; add
`<-denotational@usage' for BUCS+501A; add `sound@ja/on'.
(UU+501A): Unify DJT-00378; add some relations for other characters.
(U-000202E3): Add `<-denotational' for A-IWDSU+501A; add `<-vulgar'
for UU+501A.
(U+3464): Add `sound@ja/on'; delete `=>daikanwa'.
(CU+3464): Add `<-formed' and `<-same' for CU+5A8C.
(U-000203E3): Apply new conventions for glyph granularity.
(U-00020423): Add `sound@ja/on'.
(IU+20423): Add `<-formed' and `<-vulgar' for JU+61A8.
(BUCS+501A): New abstract node; unify A2-DJT-00378.