- Add some Adobe-Japan1-2 code points.

- Add some Adobe-Japan1-2 code points.
- Use `->denotational' and/or `->subsumptive' for some characters.
(U+6C8A): Use `->subsumptive' to separate representative nodes.
(U+6C8B): Likewise.
(U+6C91): Use `->denotational' to separate representative nodes.
(U+6C92): Use `->subsumptive' to separate representative nodes.
(U+6CC5): Likewise.
(U+6CD7): Likewise.
(U+6CEA): Add `<-formed' for JX1-7673.
(U+6D12): Use `->subsumptive' to separate representative nodes.
(mother of C6-392D): Unify G-KU+6D69 and G-CU+2F903 instead of
U-0002F903.
(C6-392D): Unify U-0002F903.
(U+6D8F): Use `->subsumptive' to separate representative node.
(B-D258): Separate JSP-474C, M-17545 and JC3-56A8.
(U+6D97): Use `<-denotational' for B-D258.
(U+6D9A): Likewise.
(U+6DCE): Use `->subsumptive' to separate representative nodes.
(U+6DD4): Use `->denotational' instead of `->subsumptive'.
(U+6DD5): Likewise.
(U+6DE7): Use `->subsumptive' to separate representative nodes.
(U+6DE9): Use `->denotational' instead of `->subsumptive'.
(U+6E23): Use `->denotational' instead of `->subsumptive'.
(U+6E8C): Use `<-simplified@JP/jis' instead of `<-simplified@JP' for
J78-482E.
(U-00023E6C): Use `->subsumptive' to separate representative nodes.
(K0-7C41): Unify KU+6ED1.
(C1-646C): Unify CU+6ED1.
(U+6F00): Use `->subsumptive' to separate representative nodes.
(U+6F31): Likewise.
(U+6F52): Likewise.
(U+6F58): Likewise.
(K0-7C52): Unify KU+6F62.
(C1-6D52): Unify CU+6F78.
(U+6F84): Use `->subsumptive' to separate representative nodes.