Maverick's Battle Is Uniting His Enemies
LEAD: This northern Fairfield County town of 22,000 people has gone head to head with the state in opposing the construction of a new state jail, with the charge led by a 42-year-old lawyer named Roderick J. MacKenzie Jr. The problem is that Mr. MacKenzie, who is also First Selectman of Newtown - the town's top elected official - seems to have about as many enemies as the jail.