PARIS (AP) — As a historic heat wave gripped Paris this week, fashion houses tried to keep their guests cool with ice packs, mist machines and iced Evian on silver platters. It wasn’t enough: some venues still sweltered, water ran short and air conditioning was absent or inadequate. Then they sent their models down the runway in leather, neoprene and wool. That was the contradiction at Paris Fashion Week Men’s, where a heat wave turned spring-summer fashion into a test of whether luxury can