classes.mixin: fix definitions for MIXIN:.
classes.mixin: fix definitions for MIXIN:.

mcandre/factor,mcandre/factor,erg/factor,erg/factor,erg/factor,mcandre/factor,mcandre/factor,mcandre/factor,erg/factor,erg/factor,mcandre/factor,erg/factor,erg/factor,mcandre/factor