[cff] Minor code administration issues. * src/cff/cffgload.c (check_points): Rename to... (cff_check_points): ...this and make it FT_LOCAL. (cff_builder_add_point, cff_builder_add_point1, cff_builder_start_point, cff_builder_close_contour, cff_lookup_glyph_by_stdcharcode, cff_get_glyph_data, cff_free_glyph_data): Make them FT_LOCAL. * src/cff/cffgload.h: Updated.