Minnesota State Retirement System plans, Public Employees Retirement Association plans, Teachers Retirement Association, Minnesota state higher education individual retirement account plan, and St. Paul Teachers Retirement Fund Association provisions changed; postretirement adjustment rates increased; employee contribution rates temporarily reduced; investment rate of return actuarial assumption reduced; direct state aid increased and extended to the public employees police and fire retirement plan, the St. Paul Teachers Retirement Fund Association, and the judges retirement plan; and money appropriated