Tom Smothers, the older half of the comic folk duo the Smothers Brothers, whose skits and songs on “The Smothers Brothers Comedy Hour” in the late 1960s brought political satire and a spirit of youthful irreverence to network television, paving the way for shows like “Saturday Night Live” and “The Daily Show,” died on Tuesday at his home in Santa Rosa, Calif., a city in Sonoma County. He was 86