(U+5203): Define as an abstract character.

(U+5203): Define as an abstract character.
(B-A462): Use `->subsumptive'; use `<-denotational' for U+5203.
(U+5204): Use `->subsumptive'.
(J0-5163): Moved into U+5204; use `<-vulgar@shinjigen' instead of
`vulgar-char-of-shinjigen-1'; add `<-simplified@misc' for M-01436 and
`<-vulgar@zhengzi-tong' for M-01849.
(J0-3F4F): Use `<-denotational' for U+5203.
(U-000206F8): Use `->subsumptive'.
(U-00020706): Likewise.
(M-01982): Unify U-00020708.
(M-01983): Unify U-00020704.
(M-01984): Unify U-00020703.
(U+5291): Use `->subsumptive'.
(U-000207FC): Likewise.
(U+5292): Likewise.