(A-compU+20486): New abstract node.

(A-compU+20486): New abstract node.
(A-cgnU+20486): Changed from U-00020486; add `<-denotational' for
A-compU+20486.
(C6-2953): Unify U-00020486 instead of IU+20486 and A-IWDSU+20486.
(U+20486-itaiji-002): Use A-cgnU+20486 instead of U-00020486 as its
mother; unify U+20486-itaiji-001.
(g2-U+20486-itaiji-001): Changed from U+20486-itaiji-001.
(A-U+20486-itaiji-003): New abstract node; use `<-denotational' for
A-compU+20486.
(U+20486-itaiji-005): New character; use `<-denotational' for
A-U+20486-itaiji-003.
(U+20486-itaiji-003): Add `<-denotational' for A-U+20486-itaiji-003.
(U+20486-itaiji-004): Add `<-denotational' for A-compU+20486.