Cleaning up parsing / typechecking of calls slightly, adding any vargs

programs/any.kl

@@ -13,10 +13,9 @@ test_arrays :: ()
     assert(i+1 == array1[i])
   array6: []*S64 = {&array1[0]}
 
-  for array1
-    *it = 0
-  for i := 0, i < length_of(array1), i+=1
-    assert(0 == array1[i])
+  for array1;; *it = 0
+  for array2;; *it = 0
+  for i := 0, i < length_of(array1), i+=1;; assert(0 == array1[i])
 
 test_any :: ()
   some_int_value := 10
@@ -25,6 +24,9 @@ test_any :: ()
   imp_any := thing
   assert(thing.type != Any)
   any_array := []Any{some_int_value, thing}
+  for any_array
+    assert(it.type == S64)
+
 
 Some_Struct :: struct
   thing: int