Keep the old tc/ipt/xt module for compatibility.

Move the file and rename the configure flags.
The file is being kept around for iptables < 1.4.5 compatibility.

Signed-off-by: Andreas Henriksson <andreas@fatal.se>
diff --git a/configure b/configure
index df40370..f3b79b2 100755
--- a/configure
+++ b/configure
@@ -53,7 +53,7 @@
 
 if [ $? -eq 0 ]
 then
-	echo "TC_CONFIG_XT:=y" >>Config
+	echo "TC_CONFIG_XT_OLD:=y" >>Config
 	echo "using xtables seems no need for internal.h"
 else
 	echo "failed test 2"
@@ -86,7 +86,7 @@
 if [ $? -eq 0 ]
 then
 	echo "using xtables instead of iptables (need for internal.h)"
-	echo "TC_CONFIG_XT_H:=y" >>Config
+	echo "TC_CONFIG_XT_OLD_H:=y" >>Config
 
 else
 	echo "failed test 3 using iptables"