No money shall be drawn from the State treasury but for appropriations made by law. All moneys for the support of the State government and for all other State purposes as far as can be ascertained or reasonably foreseen, shall be provided for in one general appropriation law covering one and the same fiscal year; except that when a change in the fiscal year is made, necessary provision may be made to effect the transition. No general appropriation law or other law appropriating money for any State purpose shall be enacted if the appropriation contained therein, together with all prior appropriations made for the same fiscal period, shall exceed the total amount of revenue on hand and anticipated which will be available to meet such appropriations during such fiscal period, as certified by the Governor.