netfilter: xtables: add backward-compat options

Concern has been expressed about the changing Kconfig options.
Provide the old options that forward-select.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

net/ipv4/netfilter/Kconfig

@@ -92,6 +92,15 @@ config IP_NF_MATCH_ECN
 
 	  To compile it as a module, choose M here.  If unsure, say N.
 
+config IP_NF_MATCH_TTL
+	tristate '"ttl" match support'
+	depends on NETFILTER_ADVANCED
+	select NETFILTER_XT_MATCH_HL
+	---help---
+	This is a backwards-compat option for the user's convenience
+	(e.g. when running oldconfig). It selects
+	COFNIG_NETFILTER_XT_MATCH_HL.
+
 # `filter', generic and specific targets
 config IP_NF_FILTER
 	tristate "Packet filtering"
@@ -313,6 +322,15 @@ config IP_NF_TARGET_ECN
 
 	  To compile it as a module, choose M here.  If unsure, say N.
 
+config IP_NF_TARGET_TTL
+	tristate '"TTL" target support'
+	depends on NETFILTER_ADVANCED
+	select NETFILTER_XT_TARGET_HL
+	---help---
+	This is a backwards-compat option for the user's convenience
+	(e.g. when running oldconfig). It selects
+	COFNIG_NETFILTER_XT_TARGET_HL.
+
 # raw + specific targets
 config IP_NF_RAW
 	tristate  'raw table support (required for NOTRACK/TRACE)'

net/ipv6/netfilter/Kconfig

@@ -94,6 +94,15 @@ config IP6_NF_MATCH_OPTS
 
 	  To compile it as a module, choose M here.  If unsure, say N.
 
+config IP6_NF_MATCH_HL
+	tristate '"hl" hoplimit match support'
+	depends on NETFILTER_ADVANCED
+	select NETFILTER_XT_MATCH_HL
+	---help---
+	This is a backwards-compat option for the user's convenience
+	(e.g. when running oldconfig). It selects
+	COFNIG_NETFILTER_XT_MATCH_HL.
+
 config IP6_NF_MATCH_IPV6HEADER
 	tristate '"ipv6header" IPv6 Extension Headers Match'
 	default m if NETFILTER_ADVANCED=n
@@ -121,6 +130,15 @@ config IP6_NF_MATCH_RT
 	  To compile it as a module, choose M here.  If unsure, say N.
 
 # The targets
+config IP6_NF_TARGET_HL
+	tristate '"HL" hoplimit target support'
+	depends on NETFILTER_ADVANCED
+	select NETFILTER_XT_TARGET_HL
+	---help---
+	This is a backwards-compat option for the user's convenience
+	(e.g. when running oldconfig). It selects
+	COFNIG_NETFILTER_XT_TARGET_HL.
+
 config IP6_NF_TARGET_LOG
 	tristate "LOG target support"
 	default m if NETFILTER_ADVANCED=n