Add some MJ code points.

Add some MJ code points.
(CU+8279): Unify <CJK RADICAL GRASS TWO> and JU+FA5E instead of
U+FA5E; add representative nodes.
(g2-CU+8279): Unify U+FA5E.
(UU+8279): Unify <CJK RADICAL GRASS ONE>; add representative nodes.
(JX2-7574): Unify <CJK RADICAL GRASS THREE> and JU+FA5D instead of
U+FA5D; add representative nodes.
(g2-UU+2EC0): Unify U+FA5D.
(U+9FB7): Apply new conventions for glyph granularity.
(UU+82EA): Unify AJ1-19736.
(U-00026B38): Use `->denotational' and `->subsumptive'.
(A-U+34BC-itaiji-002): New abstract character.
(U+34BC-itaiji-002): New character; use `<-denotational' for
A-U+34BC-itaiji-002; use `<-formed' for U+44E3; add GT-K06005.
(U-0002C72F): New character.
(A-RUI6-E03D): Apply new conventions for glyph granularity.
(A-IWDSU+83D1): New abstract node.
(U+83D1): Add `<-denotational' for A-IWDSU+83D1.
(BUCS+83DF): New abstract node.
(U+83DF): Add `<-denotational' for BUCS+83DF.
(U+83B5): Likewise.
(U-0002B7CF): New character; use `<-denotational' for BUCS+83DF.
(HD-JT-B9B5): New character; use `<-denotational' for U-0002B7CF.
(HD-JT-B989): Likewise; unify IU+2B7CF.
(U+83EB): Add `<-denotational@component' for IWDS1-0300.
(U+83F9-var-002): New character; use `<-denotational' for U+83F9.
(U+8458): Use `->denotational' and `->subsumptive'; add
`<-denotational' for A-IWDSU+83D1.
(A-RUI6-E03E): Apply new conventions for glyph granularity.
(U-00026C0C): Add `<-denotational@component' for IWDS1-0300; apply new
conventions for glyph granularity.
(U+4518): Use `->denotational' and `->subsumptive'.
(A-U+8584-itaiji-002): New abstract character; use `<-denotational'
for A-UU+8584.
(U+8584-itaiji-002): New character; use `<-denotational' for
A-U+8584-itaiji-002.
(U+8584-itaiji-003): Ditto.
(U+8612): Apply new conventions for glyph granularity.
(IWDS1-0300): New abstract component.