C-multitype-functions

Allow function returns a few variables:

multitype(double, char, int) f(void){
  return (1.1,'$', 4);
}

void test(void){
  double a=0;
  char b;
  int c;
  
  let(,b,c)=f();
  let(a,b,c)=f();
}

Look for usage examples in main.c