INTERVIEW with director JEREMY SEGHERS, who has chosen “HAMLET: THE BAD QUARTO” for his second directorial project in Pittsburgh — after his dramatization of Franz Kafka’s “The Trial.” The director has theories of about what good comes of diving into “Q1” — the earliest known version of “Hamlet” — and why it is a relevant and insightful companion to what many consider to be the greatest play in the English language.