SYDNEY, Australia -- The leaders of an Australian Christian church voted Thursday to allow homosexuals to become priests, drawing protest from within the congregation. Members of the Uniting Church opposed to the change warned it could trigger a mass exodus of followers from the church. After two days of heated debate, more than 75 percent of delegates at the Uniting Church's national assembly in Melbourne voted for gays in the clergy. The Uniting Church was formed in 1977 by a merger of Methodist, Presbyterian and Congregational denominations. The church, Australia's third largest Christian denomination, already has some gay clergy but...