(M-01721): Separate C2-5644, JX1-2E57, AJ1-20300 and HD-JC1455; unify

(M-01721): Separate C2-5644, JX1-2E57, AJ1-20300 and HD-JC1455; unify
HD-KS020430; modify `ideographic-strokes'; add
`ideographic-strokes@daikanwa'.
(K0-7D6B): Modify `ideographic-strokes'.
(JSP-3328): Likewise.
(AJ1-20081): Likewise.
(U+FA15): New character.
(AJ1-08542): Use U+FA15 instead of U+51DE as the mother; fix
`ideographic-strokes'; unify UU+FA15.
(AJ1-20307): Use U+FA15 instead of U+51DE as the mother; fix
`ideographic-strokes'; add `ideographic-radical'; unify JX1-775A and
JU+FA15; fix `ideographic-structure'.