(U+72BF): Apply new conventions for glyph granularity.

(U+72BF): Apply new conventions for glyph granularity.
(U+72DF): Likewise.
(U-000247B8): Add `sound@ja/on'.
(IU+247B8): Add `<-original' for UU+72DF.
(CU+730F): Unify MJ016982 and KOSEKI-229870; add some relations for
other characters.
(U+7331): Apply new conventions for glyph granularity.
(KU+7336): Add some relations for other characters.
(U+7337): Add `ideographic-structure'; add `sound@ja/on/{kan|go}'.
(J2004U+7337): Add `ideographic-structure'; add some relations for
other characters.
(UU+7337): Add `ideographic-structure'.
(CU+7376): Add some relations for other characters.
(CU+737E): Likewise.
(U+737F): Apply new conventions for glyph granularity.