(U+37A4-itaiji-001): New character; use `<-denotational@component' for

(U+37A4-itaiji-001): New character; use `<-denotational@component' for
A-IWDSU+37A4.
(U+37A4-itaiji-002): Ditto.
(A-IWDSU+672A-itaiji-001): New abstract node; unify
A-IWDSU+672A-itaiji-002.
(A-U+672A-itaiji-001): New abstract node; add `<-denotational' for
A-IWDSU+672A-itaiji-001.
(U+672A-itaiji-001): New character; use `<-denotational' for
A-U+672A-itaiji-001.
(A-U+672A-itaiji-002): New abstract node; add `<-denotational' for
A-IWDSU+672A-itaiji-001.
(U+672A-itaiji-002): New character; use `<-denotational' for
A-U+672A-itaiji-002.