(M-20900): Separate C2-3070; fix `total-strokes'.
(M-20901): Delete `comment'; unify M020901.
(M-20902): Delete `comment'; unify M020902.
(M-20903): Delete `comment'; unify M020903.
(M-20904): Delete `comment'; unify M020904.
(M-20905): Delete `comment'; unify M020905.
(M-20906): Delete `comment'; unify M020906.
(M-20907): Delete `comment'; separate C2-2C35 and U+73C3; unify
M020907.
(M-20909): Delete `comment'; unify M020909.
(M-20910): Delete `comment'; unify M020910.
(M-20912): Delete `comment'; unify M020912.
(M-20914): Delete `comment'; unify M020914.
(M-20916): Delete `comment'; unify M020916.
(M-20917): Separate J0-3B39, G0-493A, K0-5F26, C1-5243, U+73CA and
S2-4885; unify M058161 and S1-4884.
(M020917): New character; unify S1-4885, S2-4885, J82-3B39, K0-5F26,
C1-5243 and J90-3B39; relate to U+73CA and M-20917.
(U+73CA): Unify S1-4886, J78-3B39, G0-493A and M054140.
(M-20949): Delete `comment'; separate C2-3076; unify M020949.
(M-20950): Delete `comment'; unify M020950.
(M-20952): Separate C2-3078 and U+73DD; unify M020952.
(M-20953): Delete `comment'; unify M020953.
(M-20954): Delete `comment'; unify M020954.
(M-21149): Unify M021149.
(M-21150): Unify M021150.