WARWICK, R.I. — William J. Lynch, a lawyer who was state chairman of the Democratic Party from 1998 to 2010, on Thursday began serving as the party's unpaid special adviser.Democratic Party Chairman Joseph M. McNamara, who represents parts of Warwick and Cranston in the House of Representatives, said Lynch will provide legal and political advice to the party.McNamara said Lynch, of the Providence law firm Lynch & Pine, "will provide the extra eyes and ears on the [...]