§ 2.   Contents of general appropriation bill--Separate appropriation bills. The general appropriation bill shall embrace nothing but appropriations for ordinary expenses of the executive, legislative and judicial departments of the state, the current expenses of state institutions, interest on the public debt, and for common schools. All other appropriations shall be made by separate bills, each embracing but one object, and shall require a two-thirds vote of all the members of each branch of the Legislature.