By Asli Kandemir and Humeyra Pamuk ISTANBUL (Reuters) - Turkish Prime Minister Tayyip Erdogan demanded on Friday an immediate end to a week of anti-government unrest, saying the protests which erupted over the redevelopment of an Istanbul park had been founded on a "campaign of lies". Defending the wide use of tear gas in a police crackdown, Erdogan said similar action had been taken during protests in European countries such as Greece, as well as in the United States. ...