SACRAMENTO -- Gov. Arnold Schwarzenegger's proposed spending cap faced sharp criticism Tuesday from education advocates who claimed it eventually would gut funding to public schools by $2 billion a year and strip their constitutional guarantees of funding. Administration officials acknowledged the Proposition 98 protections would be weakened, but Education Secretary Richard Riordan insisted Schwarzenegger intends to fully fund education, even as he deals with the massive budget shortfall he inherited. The criticism of the governor's fiscal recovery plan followed a report from the nonpartisan state Legislative Analyst's Office, which estimated that the Schwarzenegger spending cap could eventually cut $2 billion...