ADD another billion, more or less, to California's budget crisis. When state lawmakers finally got around to approving a budget, they managed to make the document look a mere $8.1 billion in the red -- significantly lower than the earlier estimate of $38 billion. But the politicians' dirty little secret is that many of the savings they claim to have achieved were imaginary -- derived from accounting gimmicks, borrowing, and forecasts based on rosy assumptions that had little chance of ever coming true. One of those rosy predictions was that the state's public-employee unions would agree to forgo the pay...