(A-IWDSU+271C4): New abstract node.

(A-compU+271C4): New abstract node; use `<-denotational' for
A-IWDSU+271C4.
(U-000271C4): Apply new conventions for glyph granularity; add
`<-denotational' for A-compU+271C4.
(U-000271D5): Likewise; separate M-32741.
(U-000271CF): New character.
(M-32741): Unify IU+271CF, MJ047412 and KOSEKI-372470 instead of
U-000271D5 and C7-2828; add `<-denotational' for U-000271CF; add
`<-formed' and `<-vulgar' for MJ047376.