Sacramento -- Two appointees tapped by Gov. Arnold Schwarzenegger to study ways to rein in public pension costs receive income from firms that invest $750 million annually for the California Public Employees' Retirement System, business ties that some say could call the panel's independence into doubt. Gerald Parsky, the former head of the state Republican Party, is a partner in a Los Angeles firm, Aurora Capital Partners, which invests $150 million for CalPERS. Schwarzenegger appointed him chairman of a 12-member commission responsible for recommending ways to overhaul public pension systems, ... Commission member Matt Barger is a senior adviser at...