Use `->subsumptive' or `{<-|->}denotational' for some character

Use `->subsumptive' or `{<-|->}denotational' for some character
definitions.
(J0-5524): Add S-1613.
(U+506A): Add S1-348.
(M-00985): Separate U-00020367 and C6-4657; add `<-unknown' for
U-00020367.
(U-00020367): Separate M-00985 and H1-D245; add `<-unknown' for
M-00985.
(CB03254): Unify U-000203C9.
(U-000203DC): Add `ideographic-strokes' and `total-strokes'; complete
`ideographic-structure'.
(M-01286): Unify U-00020439 and H1-D6F2.
(U-00020439): Unify M-01286.
(M-01302): Map to U-0002044D.
(M-01319): Map to U-0002045A instead of U-0002044D.
(H1-D7D3): Use `<-denotational' for U-00020474; unify M-33957.
(U-000204DE): Moved to Ideograph-R011-Enter.el.