PARIS (AP) — This was men’s fashion season. The women were everywhere. They walked the coed Paris runways at Amiri and Ami. At Vetements, women modeled many of the “menswear” looks, and Sharon Stone closed the show in thigh-high boots. Inside fashion, none of this was eyebrow-raising. The gender blur was not happening on the margins. It was built into Paris Men’s Fashion Week, which ended Sunday, where a multibillion-dollar luxury industry shows what it thinks men will want next. It has reached