Add some representative nodes.

Add some representative nodes.
(JU+7FC5): Apply new conventions for glyph granularity for components
of ideographic-structure.
(JU+7FC6): Apply new conventions for glyph granularity.
(U+7FCA): Likewise.
(UU+7FD2): Apply new conventions for glyph granularity for components
of ideographic-structure.
(U-00026474): Use `->denotational' and `->subsumptive'.
(U-0002C686): New character.
(RUI6-E072): Map to U-0002C686.
(UU+7FF3): Apply new conventions for glyph granularity for components
of ideographic-structure.
(U+7FFC): Apply new conventions for glyph granularity.