(U+5346): Use `<-vulgar*sources' and `<-wrong-ideograph*sources'

(U+5346): Use `<-vulgar*sources' and `<-wrong-ideograph*sources'
instead of char-refs in `<-vulgar' and `<-wrong-ideograph'.
(U-00020991): Use `<-vulgar*sources' instead of char-ref in
`<-vulgar'.
(U+5351): Define as an abstract character.
(U+FA35): Use `<-denotational' for U+5351.
(J0-485C): Likewise.
(U-000209A4): Use `<-vulgar*sources' instead of char-ref in
`<-vulgar'; add `<-simplified@misc' for U+55AE.