globally replace NETFILTER_VERSION with IPTABLES_VERSION to have consistent naming
diff --git a/extensions/libipt_NETMAP.c b/extensions/libipt_NETMAP.c
index 9124157..a45acb9 100644
--- a/extensions/libipt_NETMAP.c
+++ b/extensions/libipt_NETMAP.c
@@ -25,7 +25,7 @@
 	printf(MODULENAME" v%s options:\n"
 	       "  --%s address[/mask]\n"
 	       "				Network address to map to.\n\n",
-	       NETFILTER_VERSION, opts[0].name);
+	       IPTABLES_VERSION, opts[0].name);
 }
 
 static u_int32_t
@@ -183,7 +183,7 @@
 struct iptables_target target_module
 = { NULL,
     MODULENAME,
-    NETFILTER_VERSION,
+    IPTABLES_VERSION,
     IPT_ALIGN(sizeof(struct ip_nat_multi_range)),
     IPT_ALIGN(sizeof(struct ip_nat_multi_range)),
     &help,