For the purpose of creating such fund, any such county by resolution of its county board may incur an indebtedness and issue bonds therefor in an amount or amounts not exceeding in the aggregate $9,000,000 in addition to bonds in the amount of $11,000,000 heretofore authorized and issued for that purpose. Such bonds shall bear interest at a rate of not more than the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, and shall mature within 20 years from the date thereof. The county board may provide that the resolution or resolutions authorizing the issue of such bonds shall be operative, effective and valid, without the submission thereof to the voters of such county for approval in accordance with the requirements of Section 5-1008. The county board of such county shall, before or at the time of issuing such bonds, provide for the collection of a direct annual tax upon all the taxable property of such county sufficient to pay and discharge the principal thereof at maturity and to pay the interest thereon as it falls due.
     With respect to instruments for the payment of money issued under this Section or its predecessor either before, on, or after the effective date of Public Act 86-4, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Division or “An Act to provide for the creation, setting aside, maintenance and administration of a working cash fund in counties having a population of five hundred thousand or more inhabitants”, filed June 28, 1930, that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section or its predecessor are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section or its predecessor within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Division or “An Act to provide for the creation, setting aside, maintenance and administration of a working cash fund in counties having a population of five hundred thousand or more inhabitants”, filed June 28, 1930, that may appear to be or to have been more restrictive than those Acts.