EXCLUSIVE: Here are some figures you haven’t seen bandied about much in the Tony nominations numbers game: Competing in the all-important best show categories are four new plays, five new musicals, five play revivals and four musical revivals, 18 in all. Four of those shows come from a single source: The Roundabout Theatre Company, one of four non-profits operating Broadway houses (the others are Lincoln Center Theater, the Manhattan Theatre Club and the most recent…
