Fix iptables compile error by updating to Makefile.autotools.in and bumping version to 1.4.1

# iptables

#

#############################################################

IPTABLES_VERSION:=1.3.8

IPTABLES_SOURCE_URL:=http://ftp.netfilter.org/pub/iptables

IPTABLES_SOURCE:=iptables-$(IPTABLES_VERSION).tar.bz2

IPTABLES_CAT:=$(BZCAT)

IPTABLES_BUILD_DIR:=$(BUILD_DIR)/iptables-$(IPTABLES_VERSION)

IPTABLES_VERSION = 1.4.1

IPTABLES_SOURCE = iptables-$(IPTABLES_VERSION).tar.bz2

IPTABLES_SITE = http://ftp.netfilter.org/pub/iptables

$(DL_DIR)/$(IPTABLES_SOURCE):

	 $(WGET) -P $(DL_DIR) $(IPTABLES_SOURCE_URL)/$(IPTABLES_SOURCE)

IPTABLES_INSTALL_STAGING = NO

IPTABLES_INSTALL_TARGET = YES

IPTABLES_INSTALL_TARGET_OPT = DESTDIR=$(TARGET_DIR) install-exec-am

$(IPTABLES_BUILD_DIR)/.unpacked: $(DL_DIR)/$(IPTABLES_SOURCE)

	$(IPTABLES_CAT) $(DL_DIR)/$(IPTABLES_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -

	touch $@

IPTABLES_AUTORECONF = YES

IPTABLES_DEPENDENCIES = 

IPTABLES_CONFIGURE_OPT = --with-kernel=$(LINUX_HEADERS_DIR) 

IPTABLES_MAKE_OPT = GLIB_GENMARSHAL=/usr/bin/glib-genmarshal GLIB_MKENUMS=/usr/bin

$(IPTABLES_BUILD_DIR)/.configured: $(IPTABLES_BUILD_DIR)/.unpacked

	# Allow patches. Needed for openwrt for instance.

	toolchain/patch-kernel.sh $(IPTABLES_BUILD_DIR) package/iptables/ iptables\*.patch

	#

	$(SED) "s;\[ -f /usr/include/netinet/ip6.h \];grep -q '__UCLIBC_HAS_IPV6__ 1' \

		$(STAGING_DIR)/usr/include/bits/uClibc_config.h;" $(IPTABLES_BUILD_DIR)/Makefile

	touch $@

$(IPTABLES_BUILD_DIR)/iptables: $(IPTABLES_BUILD_DIR)/.configured

	$(MAKE1) $(TARGET_CONFIGURE_OPTS) -C $(IPTABLES_BUILD_DIR) \

		KERNEL_DIR=$(LINUX_HEADERS_DIR) \

		COPT_FLAGS="$(TARGET_CFLAGS)" \

		PREFIX=/usr \

		INCDIR="\$$(PREFIX)/include" \

		MANDIR="\$$(PREFIX)/share/man"

$(TARGET_DIR)/usr/sbin/iptables: $(IPTABLES_BUILD_DIR)/iptables

	$(MAKE) $(TARGET_CONFIGURE_OPTS) -C $(IPTABLES_BUILD_DIR) \

		KERNEL_DIR=$(LINUX_HEADERS_DIR) \

		COPT_FLAGS="$(TARGET_CFLAGS)" \

		PREFIX=/usr \

		INCDIR="\$$(PREFIX)/include" \

		MANDIR="\$$(PREFIX)/share/man" \

		DESTDIR=$(TARGET_DIR) install

	$(STRIPCMD) $(TARGET_DIR)/usr/sbin/iptables*

	$(STRIPCMD) $(TARGET_DIR)/usr/lib/iptables/*.so

ifneq ($(BR2_HAVE_MANPAGES),y)

	rm -rf $(TARGET_DIR)/usr/share/man

endif

iptables: $(TARGET_DIR)/usr/sbin/iptables

iptables-source: $(DL_DIR)/$(IPTABLES_SOURCE)

$(eval $(call AUTOTARGETS,package,iptables))

iptables-clean:

	-$(MAKE1) -C $(IPTABLES_BUILD_DIR) clean

	rm -rf $(TARGET_DIR)/usr/sbin/iptables* $(TARGET_DIR)/usr/lib/iptables

iptables-dirclean:

	rm -rf $(IPTABLES_BUILD_DIR)

#############################################################

#

# Toplevel Makefile options

#

#############################################################

ifeq ($(strip $(BR2_PACKAGE_IPTABLES)),y)

TARGETS+=iptables

endif