MANAMA, Sept 29 (Reuters) - A Bahraini court on Monday revoked the citizenship of nine people convicted of trying to smuggle ******* into the country and it sentenced them to life in prison, the Gulf Arab kingdom's official news agency said. King Hamad, in a move that alarmed human rights groups, last year toughened penalties in anti-terrorism laws ahead of planned anti-government protests by approving proposals that included stripping people convicted of "dangerous terror crimes" of their citizenship. Sunni Muslim-ruled Bahrain, strategically important to the West because it hosts the U.S. ...