(U-00020037): Moved from Ideograph-R001-One.el; apply new conventions

(U-00020037): Moved from Ideograph-R001-One.el; apply new conventions
for glyph granularity.
(M-03620): Add `<-denotational' for U-00020037; unify IU+20037.
(U-00020039): Moved from Ideograph-R001-One.el; apply new conventions
for glyph granularity.
(M-03621): Add `<-denotational' for U-00020039; unify IU+20039.
(A-U+20037-itaiji-001): New abstract node.
(U+20037-itaiji-001): New character; use `<-denotational' for
A-U+20037-itaiji-001.
(U+5639): Add `<-denotational@usage' for BUCS+5639; apply new
conventions for glyph granularity.
(BUCS+5639): New abstract node.