There is a sigh of relief going through the State Capital today, as the State Revenue Forecast is showing an increase in income for the first time in two years.   State Economist Tom Potiowsky says it's an encouraging sign, but others are not so sure.   Bend Senator Chris Telfer says the so called positive numbers are coming from some administrative slight of hand.  “In essence what the Department of Revenue did was increase withholding on employees payroll checks by a $100-million. So now they have a $100-million more coming in. So without that little gimmick, they would be down $38-million.” Forecasters are saying the numbers will mean the state will not have to make any cuts to the current two-year budget. It is now in the black by about $60-million. But, the deficit in the next two-year budget has grown to $3.5 billion.