WHAT HAPPENED THIS WEEK? As the secretary of state's unofficial deadline passed, business supporters of Gov. Arnold Schwarzenegger's "reform" agenda and an opposing coalition of Democrats and labor unions submitted millions of signatures to qualify proposed ballot initiatives. In all, registrars are verifying signatures for eight possible measures: Redistricting - The Schwarzenegger-backed measure would shift the task of redrawing legislative and congressional district boundaries from the Legislature to a panel of judges. Budget - Centerpiece of the governor's plan, the measure would enact state spending controls and let the governor unilaterally cut programs. Tenure - A third Schwarzenegger proposal would...