Add `=decomposition@cid' for some Adobe-Japan1 abstract glyph-forms.

Add `=decomposition@cid' for some Adobe-Japan1 abstract glyph-forms.
(GT-K00813): New character.
(A-cgnU+52A3): New abstract node.
(U+52A3): Add `<-denotational' for A-cgnU+52A3.
(UU+52A3): Delete `=>ucs@iwds-1'.
(HNG-KHM0010-0): Use A-cgnU+52A3 instead of U+52A3 as its mother; fix
`ideographic-structure'.
(U+52A8): Apply new conventions for glyph granularity; use
`<-denotational@usage' instead of `<-denotational' for BUCS+52D5.
(MJ057064): New character; use `<-denotational' for U+52A9; unify
HD-KS027050.
(HNG-KHM0009-0): Use g2-MJ057064 instead of U+52A9 as its mother.
(U+52BE): Apply new conventions for glyph granularity.
(AJ1-13866): Add `=decomposition@cid' for [U+52E2 U+E0101] to
represent duplicated IVD.
(g2-AJ1-13866): Use [U+2B751 U+E0100] instead of [U+52E2 U+E0101] as
the value of `=decomposition@cid'.
(M-02352): Unify MJ000241 and HD-KS027290.
(U-0002085E): Apply new conventions for glyph granularity.
(U-00020876): Likewise.
(M-02383): Unify MJ031531 and HD-KS027660.
(U+52D5): Use `<-denotational@usage' instead of `<-denotational' for
BUCS+52D5.
(U-00020886): Apply new conventions for glyph granularity.
(U-00020889): Likewise.
(M-02420): Unify MJ031554 and HD-KS028140.
(U-000208A7): Apply new conventions for glyph granularity.
(U-000208AE): New character.