(U+3775): Unify BC-8ACD.

(U+3775): Unify BC-8ACD.
(U+5C01): Add `ideographic-structure'.
(U+5C03): Add `sound@ja/on/{kan|go}'.
(UU+5C03): Add `<-interchangeable' for UU+6577 and UU+6EA5; add
`<-original' for IU+22FAD; add `<-same' for IU+22FAD and UU+6577; add
`->mistakable' for UU+5C08; add `->wrong' for UU+6577.
(MJ057348): Unify U-0002D531.
(U-0002D53F): New character; use `<-denotational' for BUCS+5C0A.
(A-MJ057359): Use U-0002D53F instead of BUCS+5C0A as its mother.
(U-00021B35): Apply new conventions for glyph granularity.
(M-07450): Unify MJ034173 and KOSEKI-084670.