By Patrick Markey and Tarek Amara TUNIS (Reuters) - Veteran Tunisian politician Beji Caid Essebsi won the country's first free presidential election, in the final step of a transition to democracy after an uprising that ousted autocrat Zine El-Abidine Ben Ali in 2011. Essebsi beat rival and incumbent Moncef Marzouki with 55.68 percent of the vote against 44.32 percent in Sunday's run-off ballot between the two men, according the results released on Monday by the electoral authorities. A former official under Ben Ali, Essebsi recast himself as a technocrat. ...