It’s unfortunate when a filmmaker sets out to pay tribute to a cinematic classic yet somehow manages to mangle the effort, but, regrettably, that’s precisely what happened in writer-director Nancy Buirski’s attempted homage to John Schlesinger’s “Midnight Cowboy” (1969), the only X-rated release ever to win the Oscar for best picture. The scattered narrative of this poorly constructed documentary seems to focus on virtually everything except the film itself, drawing upon an everything-but-the-kitchen-sink approach to explaining what influenced this screen epic rather than what went into the mak...