Add some Adobe-Japan1-2 code points.

Add some Adobe-Japan1-2 code points.
(U+7323): Use `->denotational' instead of `->subsumptive'.
(U-000247DC): Use `->subsumptive'.
(U+7324): Likewise.
(U-000247DD): Use `->subsumptive' to separate representative nodes.
(mother of JX1-776F): Unify G-JU+FA16, G-KU+732A and G-CU+732A instead
of U+FA16.
(JX1-776F): Unify U+FA16.
(U+7377): Unify A-JX2-7057.
(B-C278): Unify o-JU+7377 and A-CU+7377.
(C1-7664): Unify CU+7377.