(A-BC-8CC6): New abstract node.

(A-BC-8CC6): New abstract node.
(BC-8CC6): New character; use `<-denotational' for A-BC-8CC6.
(A-BC-8851): Add `<-denotational@component' for A-compBC-8851.
(A-BC-8851-itaiji-001): New abstract node; use
`<-denotational@component' for A-compBC-8851.
(BC-8851-itaiji-001): New character; use `<-denotational' for
A-BC-8851-itaiji-001.
(A-BC-8851-itaiji-002): New abstract node; use
`<-denotational@component' for A-compBC-8851; unify
A-BC-8851-itaiji-003.
(BC-8851-itaiji-002): New character; use `<-denotational' for
A-BC-8851-itaiji-002.
(BC-8851-itaiji-003): Ditto.
(A-compBC-8851): New abstract node.