(MJ007276): Separated from abstract glyph-image node:

(MJ007276): Separated from abstract glyph-image node:
- Unify G-KU+516C instead of g2-KU+516C.
- Unify G-AJ1-13440 instead of g2-AJ1-13440.
- Unify G-J{78|83}-3878 instead of g2-J{78|83}-3878.
- Delete g2-K0-4D6B.
- Unify G-HD-FT1623 instead of g2-HD-FT1623.
- Unify G-M-01452 instead of g2-M-01452.
- Delete g2-S-0494.
(g2-KU+516C): Unify g2-MJ007276 instead of MJ007276; use
`<-subsumptive' for MJ007276.
(G-UU+516C): New glyph node; use `<-subsumptive' for U+516C.
(g2-UU+516C): Use G-UU+516C instead of U+516C as its mother.
(U+516C-var-001): Likewise.