Add some representative nodes.

Add some representative nodes.
(U+4E42): Apply new conventions for glyph granularity.
(U+4E45): Likewise.
(UU+53CA): Use `ideographic-{radical|strokes}@daikanwa' and
`total-strokes@daikanwa' instead of
`ideographic-{radical|strokes}@ucs' and `total-strokes@ucs'; move
U-0002F836 to g2-UU+53CA; apply new conventions for glyph granularity.
(U+4E4B): Apply new conventions for glyph granularity.
(GT-00177): Unify U-00020090 and BC-87DF.
(U+4E4F): Apply new conventions for glyph granularity.
(U+3406): Likewise.