(A-IWDSU+513F): Add `<-denotational@component' for A-IWDSU+4E37.

(A-IWDSU+513F): Add `<-denotational@component' for A-IWDSU+4E37.
(A-U+5152-itaiji-002): New abstract node; use `<-denotational' for
BUCS+5152.
(U+5152-itaiji-002): New character; use `<-denotational' for
A-U+5152-itaiji-002.
(U+5152-itaiji-003): Ditto.
(U+5140): Add `ideographic-structure'; delete `<-mistakable@component'
for GT-K00264; apply new conventions for glyph granularity.
(U+5143): Add A-IWDSU+4E93 as a target of `<-denotational@component'.
(U-00020484): Apply new conventions for glyph granularity.