SAN FRANCISCO (Reuters) - California Gov. Arnold Schwarzenegger called on lawmakers on Wednesday to pass legislation to allow the private sector to have a bigger role in building, operating and maintaining the state's public works. The Republican governor, who has often spoken in favor of public-private partnerships to improve and expand state infrastructure, urged the state's Democrat-led legislature to approve bills that would expand the types of projects, services and government entities that could enter into such tie-ups. Schwarzenegger and top lawmakers rallied voters last year to support ballot measures authorizing more than $40 billion in general obligation debt to...