There is a coffin sitting onstage. A lesbian is the narrator. There are no movie stars in it. And viewers are promised a suicide by Page 9 of the script. “Fun Home,” which goes into Sunday’s Tony Awards tied for the most nominations, doesn’t sound like it has the makings of a hit in New York, much less on the road. Think again. The poignant show, based on Alison Bechdel’s graphic novel memoir about growing up as a lesbian with a closeted dad, coincides with the Supreme Court preparing to rule on whether to allow same-sex marriage nationwide. Director Sam Gold says, “The show is capturing something about the cultural consciousness that is about this present moment. This is the moment for a show like ‘Fun Home.'”