added a bunch of builtins
added a bunch of builtins

Thanks Hal Finkel for providing the list!

jacekburys/csmith,Panos90/csmith,DmitryOlshansky/dsmith,DmitryOlshansky/dsmith,natgla/csmith,natgla/csmith,jacekburys/csmith,jacekburys/csmith,natgla/csmith,DmitryOlshansky/dsmith,jacekburys/csmith,DmitryOlshansky/dsmith,Panos90/csmith,Panos90/csmith,natgla/csmith,Panos90/csmith,jacekburys/csmith