I would define a society as feminist (or perhaps more appropriately not anti-feminst) if it recognizes the sexes as fully equal all aspects social interaction - including marriage and rights therein.
I see no logical reason why a society which is based on arranged marriages to cement family ties and confer status on families and offspring could not also consider women fully equal to men. If the family/clan decisions incorporate equally the concerns of the elder women and elder men, and the children being married off have an equal say (none) in what happens to them, males and females have the same rights. So I'd take it even farther. Even if the marriages were forced at spearpoint, this has nothing to do with gender distinctions(except with respect to homosexuals, of course).