(U+5184): Add `=>iwds-1*note'; add `sound@ja/on'; unify IWDS1-7879.

(U+5184): Add `=>iwds-1*note'; add `sound@ja/on'; unify IWDS1-7879.
(IWDS1-0079): New abstract node; use `<-denotational' for U+5184;
unify o-UU+5184, o-AJ1-19173, o-BC-8A79 and o-GT-01981.
(UU+5184): Use o-UU+5184 instead of U+5184 as its mother; separate
IWDS1-0079; add `<-same' and `->formed' for MJ007307; add
representative nodes.
(IWDS1-0078): New abstract node; unify A-BC-89FA; use `<-denotational'
for U+5184.
(BC-87F0): Add representative node.
(GT-K00688): Likewise; Use `<-denotational' for IWDS1-0078 instead of
UU+5184; use `<-denotational@component' for o-UU+5184.
(U+5189): Add `sound@ja/on/{kan|go}'.
(MJ007307): Add some relations for other characters.