(A-cgnU+6B63): Changed from U+6B63.

(A-cgnU+6B63): Changed from U+6B63.
(U+6B63): Changed from A-IWDSU+6B63; use A-cgnU+6B63 instead of U+6B63
as its mother.
(UU+6B63): Use U+6B63 instead of A-IWDSU+6B63 as its mother; add
representative nodes.
(GT-K00455): Use U+6B63 instead of A-IWDSU+6B63 as its mother.
(HNG-KHM0398-0): Use A-cgnU+6B63 instead of U+6B63 as its mother.
(U+6B6A): Apply new conventions for glyph granularity; add `<-same'
and `<-vulgar' for MJ019362; add representative nodes.