(glyph_category): New enum. (MGlyph): Change type of <category> to enum glyph_category.
(glyph_category): New enum.
(MGlyph): Change type of <category> to enum glyph_category.

xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib