New Jersey Blocks Off Highlands But Eases Other Rules for Builders
New Jersey lawmakers approve two bills that could alter state's landscape for generations; one will protect much of state's drinking water by limiting development in area known as Highlands, but critics have lambasted Gov James McGreevey for trading out benefits of that bill for one that streamlines building permit process in much of state, which is likely to accelerate construction in some areas; second bill passed quickly and with no floor debate, illustrating construction lobby's political muscle; legal experts say rules are so lax now that they are not likely to withstand court challenges; map shows desinated growth areas (M)