Indian politician's son guilty of model's murderMon Dec 18, 2006 10:41 AM GMT By Samanwaya RautrayNEW DELHI (Reuters) - The son of an influential member of India's ruling Congress party was found guilty on Monday of murdering a model in 1999, in a retrial of a controversial case which has transfixed the country.Jessica Lall, 34, was tending the bar at an exclusive party in New Delhi when she was shot dead by Manu Sharma, the son of a Congress party politician, apparently for refusing to serve him a drink after the bar had closed.Sharma had been acquitted in February,...