Remove ISDN4BSD (I4B) from HEAD as it is not MPSAFE and

parts relied on the now removed NET_NEEDS_GIANT.
Most of I4B has been disconnected from the build
since July 2007 in HEAD/RELENG_7.

This is what was removed:
- configuration in /etc/isdn
- examples
- man pages
- kernel configuration
- sys/i4b (drivers, layers, include files)
- user space tools
- i4b support from ppp
- further documentation

Discussed with: rwatson, re

4 files changed, 3 insertions, 59 deletions

diff --git a/etc/rc.d/Makefile b/etc/rc.d/Makefile
index bfb1bfc..7be483d 100755
--- a/etc/rc.d/Makefile
+++ b/etc/rc.d/Makefile
@@ -16,7 +16,7 @@ FILES=	DAEMON FILESYSTEMS LOGIN NETWORKING SERVERS \
 	hostapd hostid hostname \
 	idmapd inetd initrandom \
 	ip6addrctl ip6fw ipfilter ipfs ipfw ipmon \
-	ipnat ipsec ipxrouted isdnd \
+	ipnat ipsec ipxrouted \
 	jail \
 	kadmind kerberos kernel keyserv kldxref kpasswdd \
 	ldconfig local localpkg lockd lpd \
diff --git a/etc/rc.d/NETWORKING b/etc/rc.d/NETWORKING
index 21b584b..f290d3b 100644
--- a/etc/rc.d/NETWORKING
+++ b/etc/rc.d/NETWORKING
@@ -4,7 +4,7 @@
 #
 
 # PROVIDE: NETWORKING NETWORK
-# REQUIRE: netif netoptions routing network_ipv6 isdnd ppp
+# REQUIRE: netif netoptions routing network_ipv6 ppp
 # REQUIRE: routed mrouted route6d mroute6d resolv
 
 #	This is a dummy dependency, for services which require networking
diff --git a/etc/rc.d/isdnd b/etc/rc.d/isdnd
deleted file mode 100644
index ab38764..0000000
--- a/etc/rc.d/isdnd
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/bin/sh
-#
-# $FreeBSD$
-#
-# Mostly based on original script (/etc/rc.isdn) written by  Hellmuth Michaelis
-#
-
-# PROVIDE: isdnd
-# REQUIRE: netif FILESYSTEMS cleanvar
-# KEYWORD: nojail
-
-. /etc/rc.subr
-
-name="isdnd"
-rcvar=`set_rcvar isdn`
-pidfile="/var/run/${name}.pid"
-command="/usr/sbin/isdnd"
-start_cmd="isdnd_start"
-
-isdnd_start()
-{
-	echo -n 'ISDN subsystem setup:'
-
-	# Start isdnd
-	#
-	echo -n ' isdnd'
-	case ${isdn_fsdev} in
-	[Nn][Oo] | '')
-		/usr/sbin/isdnd ${isdn_flags}
-		;;
-	*)
-		# Change vidmode of ${isdn_fsdev}
-		#
-		case ${isdn_screenflags} in
-		[Nn][Oo])
-			;;
-		*)
-			/usr/sbin/vidcontrol < ${isdn_fsdev} > ${isdn_fsdev} 2>&1 ${isdn_screenflags}
-			;;
-		esac
-
-		/usr/sbin/isdnd ${isdn_flags} -f -r ${isdn_fsdev} -t ${isdn_ttype}
-		;;
-	esac
-
-	# Start isdntrace
-	#
-	if checkyesno isdn_trace; then
-		echo -n ' isdntrace'
-		nohup /usr/sbin/isdntrace ${isdn_traceflags} >/dev/null 2>&1 &
-	fi
-	echo '.'
-}
-
-load_rc_config $name
-run_rc_command "$1"
diff --git a/etc/rc.d/ppp b/etc/rc.d/ppp
index 2ab1696..b3991fe 100644
--- a/etc/rc.d/ppp
+++ b/etc/rc.d/ppp
@@ -4,7 +4,7 @@
 #
 
 # PROVIDE: ppp
-# REQUIRE: netif isdnd
+# REQUIRE: netif
 # KEYWORD: nojail
 
 . /etc/rc.subr