So how would we know if we were in the middle of a real Oscars revolution? For starters, how about a foreign language film earning a best picture nomination for the first time since 2012’s “Amour”? In this dramatic membership expansion, the academy has, to its credit, cast a wide net, inviting hundreds of international filmmakers, actors and crafts people. (“What it is is we realize now how much talent there is out there,” academy president John Bailey told me last year.)