(AJ1-05429): Unify U+6D95 instead of A-IWDSU+6D95 and UU+6D95; use
A-cgnU+6D95 instead of U+6D95 as its mother; add some relations for
other characters; add representative nodes.
(HNG-KHM0085-0): Use A-cgnU+6D95 instead of U+6D95 as its mother.
(U+6F05): Apply new conventions for glyph granularity.
(U+6FC8): Likewise.