Specify dependencies libs explicitly.

Such setup is better for cross compilation. Also changed Makefile to
properly make the project with these libraries.

deps/libnfnetlink/autogen.sh

@@ -0,0 +1,37 @@
+#!/bin/sh -e
+
+include ()
+{
+    # If we keep a copy of the kernel header in the SVN tree, we'll have
+    # to worry about synchronization issues forever. Instead, we just copy 
+    # the headers that we need from the lastest kernel version at autogen
+    # stage.
+
+    INCLUDEDIR=${KERNEL_DIR:-/lib/modules/`uname -r`/build}/include/linux
+
+    if [ -f $INCLUDEDIR/netfilter/nfnetlink.h ]
+    then
+    	TARGET=include/libnfnetlink/linux_nfnetlink.h
+    	echo "Copying nfnetlink.h to linux_nfnetlink.h"
+    	cp $INCLUDEDIR/netfilter/nfnetlink.h $TARGET
+	TMP=`mktemp`
+	sed 's/#include <linux\/netfilter\/nfnetlink_compat\.h>/#include <libnfnetlink\/linux_nfnetlink_compat\.h>/g' $TARGET > $TMP
+	cp $TMP $TARGET
+    else
+    	echo "can't find nfnetlink.h kernel file in $INCLUDEDIR"
+    	exit 1
+    fi
+
+    if [ -f $INCLUDEDIR/netfilter/nfnetlink_compat.h ]
+    then
+    	TARGET=include/libnfnetlink/linux_nfnetlink_compat.h
+    	echo "Copying nfnetlink_compat.h to linux_nfnetlink_compat.h"
+	cp $INCLUDEDIR/netfilter/nfnetlink_compat.h $TARGET
+    else
+    	echo "can't find nfnetlink.h kernel file in $INCLUDEDIR, ignoring"
+    fi
+}
+
+[ "x$1" = "xdistrib" ] && include
+autoreconf -fi
+rm -Rf autom4te.cache