Reverse procedure parameters on the stack

tests/expectations/print_in_proc.txt

@@ -1 +1,2 @@
 14
+8

tests/vm/print_in_proc.elna

@@ -1,7 +1,8 @@
-proc print2(a: int) {
+proc print2(a: int, b: int) {
   printi(a);
+  printi(b);
 }
 
 proc main() {
-  print2(14);
+  print2(14, 8);
 }