added implementation of tuple and projection to scala simple comp
added implementation of tuple and projection to scala simple comp

zhiyuanshi/fcore,bixuanzju/fcore,zhiyuanshi/fcore,hkuplg/fcore,bixuanzju/fcore,xnning/fcore,zhiyuanshi/fcore,wxzh/fcore,hkuplg/fcore,wxzh/fcore,wxzh/fcore,xnning/fcore,bixuanzju/fcore,xnning/fcore,hkuplg/fcore