(U+663C): Add `<-denotational@component' for A-IWDSU+663C; apply new

(U+663C): Add `<-denotational@component' for A-IWDSU+663C; apply new
conventions for glyph granularity.
(A-U+99AC-itaiji-004): New abstract node.
(U+99AC-itaiji-004): New character; use `<-denotational' for
A-U+99AC-itaiji-004.
(A-GT-K07007): Unify U-0002ECA1.
(GT-K07007): Unify hanaJU+2ECA1.
(A-U+27C2E-itaiji-001): New abstract node.
(U+27C2E-itaiji-001): New character; use `<-denotational' for
A-U+27C2E-itaiji-001.
(U+66B4): Add `<-denotational@usage' for BUCS+66B4.
(UU+66B4): Unify DJT-04608.
(U-0002D9D2): New character.
(U-0002D9D4): New character.
(U-000232B1): New character.
(A-CB09946): Moved to Ideograph-R119-Rice.el; unify U-00031E56.
(CB09946): Moved to Ideograph-R119-Rice.el; unify hanaJU+31E56.
(BUCS+66B4): New abstract node; unify A2-DJT-04608.