Swap cons cell order in runtime for Knock+

Author: pdarragh

knock-plus/values.h

@@ -12,7 +12,7 @@ typedef enum type_t {
   T_INT,
   T_BOOL,
   T_CHAR,
-  T_EOF,  
+  T_EOF,
   T_VOID,
   T_EMPTY,
   /* pointers */
@@ -27,8 +27,8 @@ typedef struct val_box_t {
   val_t val;
 } val_box_t;
 typedef struct val_cons_t {
-  val_t snd;
   val_t fst;
+  val_t snd;
 } val_cons_t;
 typedef struct val_vect_t {
   uint64_t len;