iptables: use autoconf to process .in man pages

This fixes a bug in iptables.8 and ip6tables.8 where @PACKAGE_VERSION@
was not processed in the VERSION section. It also simplifies the
Makefile by avoiding some sed commands.

[ Mangled this patch to rename iptables-extensions.8.in to
  iptables-extensions.8.tmpl.in to avoid having a file whose name
  is terminated by .in.in --pablo ]

Signed-off-by: Andy Spencer <andy753421@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/configure.ac b/configure.ac
index d165d52..3e5e826 100644
--- a/configure.ac
+++ b/configure.ac
@@ -127,6 +127,8 @@
 
 AC_CONFIG_FILES([Makefile extensions/GNUmakefile include/Makefile
 	iptables/Makefile iptables/xtables.pc
+	iptables/iptables.8 iptables/ip6tables.8
+	iptables/iptables-extensions.8.tmpl
 	libipq/Makefile libipq/libipq.pc
 	libiptc/Makefile libiptc/libiptc.pc
 	libiptc/libip4tc.pc libiptc/libip6tc.pc
diff --git a/iptables/.gitignore b/iptables/.gitignore
index 4fc63aa..c9c3178 100644
--- a/iptables/.gitignore
+++ b/iptables/.gitignore
@@ -6,6 +6,7 @@
 /iptables
 /iptables.8
 /iptables-extensions.8
+/iptables-extensions.8.tmpl
 /iptables-save
 /iptables-restore
 /iptables-static
diff --git a/iptables/Makefile.am b/iptables/Makefile.am
index 61e78db..46d2463 100644
--- a/iptables/Makefile.am
+++ b/iptables/Makefile.am
@@ -38,15 +38,8 @@
 v6_sbin_links  = ip6tables ip6tables-restore ip6tables-save
 endif
 
-iptables.8: ${srcdir}/iptables.8.in
-	${AM_VERBOSE_GEN} sed -e 's/@PACKAGE_AND_VERSION@/${PACKAGE} ${PACKAGE_VERSION}/g' $< >$@;
-
-ip6tables.8: ${srcdir}/ip6tables.8.in
-	${AM_VERBOSE_GEN} sed -e 's/@PACKAGE_AND_VERSION@/${PACKAGE} ${PACKAGE_VERSION}/g' $< >$@;
-
-iptables-extensions.8: ${srcdir}/iptables-extensions.8.in ../extensions/matches.man ../extensions/targets.man
-	${AM_VERBOSE_GEN} sed -e \
-		's/@PACKAGE_AND_VERSION@/${PACKAGE} ${PACKAGE_VERSION}/g' \
+iptables-extensions.8: ${srcdir}/iptables-extensions.8.tmpl ../extensions/matches.man ../extensions/targets.man
+	${AM_VERBOSE_GEN} sed \
 		-e '/@MATCH@/ r ../extensions/matches.man' \
 		-e '/@TARGET@/ r ../extensions/targets.man' $< >$@;
 
diff --git a/iptables/ip6tables.8.in b/iptables/ip6tables.8.in
index 8634854..05e0d0f 100644
--- a/iptables/ip6tables.8.in
+++ b/iptables/ip6tables.8.in
@@ -1,4 +1,4 @@
-.TH IP6TABLES 8 "" "@PACKAGE_AND_VERSION@" "@PACKAGE_AND_VERSION@"
+.TH IP6TABLES 8 "" "@PACKAGE_STRING@" "@PACKAGE_STRING@"
 .\"
 .\" Man page written by Andras Kis-Szabo <kisza@sch.bme.hu>
 .\" It is based on iptables man page.
diff --git a/iptables/iptables-extensions.8.in b/iptables/iptables-extensions.8.tmpl.in
similarity index 93%
rename from iptables/iptables-extensions.8.in
rename to iptables/iptables-extensions.8.tmpl.in
index 9ec3fb0..99d89a1 100644
--- a/iptables/iptables-extensions.8.in
+++ b/iptables/iptables-extensions.8.tmpl.in
@@ -1,4 +1,4 @@
-.TH iptables-extensions 8 "" "@PACKAGE_AND_VERSION@" "@PACKAGE_AND_VERSION@"
+.TH iptables-extensions 8 "" "@PACKAGE_STRING@" "@PACKAGE_STRING@"
 .SH NAME
 iptables-extensions \(em list of extensions in the standard iptables distribution
 .SH SYNOPSIS
diff --git a/iptables/iptables.8.in b/iptables/iptables.8.in
index 9643705..0fba603 100644
--- a/iptables/iptables.8.in
+++ b/iptables/iptables.8.in
@@ -1,4 +1,4 @@
-.TH IPTABLES 8 "" "@PACKAGE_AND_VERSION@" "@PACKAGE_AND_VERSION@"
+.TH IPTABLES 8 "" "@PACKAGE_STRING@" "@PACKAGE_STRING@"
 .\"
 .\" Man page written by Herve Eychenne <rv@wallfire.org> (May 1999)
 .\" It is based on ipchains page.