(parent of BC-8BAA): Use `<-simplified@component/connect-below'

(parent of BC-8BAA): Use `<-simplified@component/connect-below'
instead of `<-simplified' for J0-3962.
(BC-8C4D): Likewise.
(GT-K04733): New character.
(M-00316): Use `zhengzitong' instead of `zhengzi-tong' in
`<-vulgar*sources'.
(U-00020170): Use `->subsumptive' to integrate M-23981 and C6-4C2D;
use `ideographic-{radical|strokes}@ucs' instead of
`ideographic-{radical|strokes}'; add
`ideographic-{radical|strokes}@cns' and
`ideographic-radical@cns*sources'.