The powers conferred by this chapter are in addition and supplemental to, and the limitations imposed by this chapter shall not affect, the powers conferred by any other general statute, special act, charter or ordinance of this state or any county. Home mortgages may be acquired, purchased and financed, and bonds or notes may be issued under this chapter for such purposes, notwithstanding that any other general statute, special act, charter or ordinance may provide for the acquisition, purchase and financing of like home mortgages or the issuance of bonds or notes for like purposes, and without regard to the requirements, restrictions, limitations or other provisions contained in any other such law.