By Rich McKay and Gabriella Borter (Reuters) – Arctic cold extended its grip over much of the United States on Friday, combining with snow, ice and howling winds from a major winter storm roaring out of the Great Lakes to disrupt energy supplies and thwart travel for millions of Americans ahead of the holiday weekend. The extreme winter weather was blamed for at least four deaths on Friday. A 50-vehicle traffic pileup on the Ohio Turnpike in the midst of a blizzard near Toledo killed one motorist, injured several others and shut down both lanes of the highway, according to the Toledo Fire & Re…