FBI, cops digging up SoHo basement in connection with boy’s 1979 disappearance

APEtan Patz disappeared in 1979. He never got off the block, investigators believe. Authorities are digging up the basement of a SoHo building where they believe a handyman buried the body of Etan Patz — whose disappearance 33 years ago sparked one of the most extensive and heart-wrenching manhunts in…