Sacramento -- Thinking about heading to the Department of Motor Vehicles to renew your registration? Or going to a Franchise Tax Board office for help on a tax return? Don't go on Thursday. The doors to state offices will be locked for the holiday honoring Cesar Chavez. It's one of 13 official holidays that 200,000 state employees enjoy, along with a floating paid personal day that can be taken at their pleasure. But Gov. Arnold Schwarzenegger has proposed eliminating two state holidays, eventually saving the state $17.6 million annually. "We're looking to achieve savings large and small," said H.D. Palmer,...