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

1 files changed, 0 insertions, 77 deletions

diff --git a/sys/conf/files.pc98 b/sys/conf/files.pc98
index 97d85f6..68638c8 100644
--- a/sys/conf/files.pc98
+++ b/sys/conf/files.pc98
@@ -237,83 +237,6 @@ i386/svr4/svr4_locore.s		optional compat_svr4	\
 	warning "COMPAT_SVR4 is broken and should be avoided"
 i386/svr4/svr4_machdep.c	optional compat_svr4
 #
-# isdn4bsd, needed for isic | iwic | ifpi | ifpi2 | ihfc | ifpnp | itjc
-#
-i4b/layer1/i4b_hdlc.c		optional ihfc | itjc
-i4b/layer1/i4b_l1dmux.c		optional ifpi | ifpi2 | ifpnp | \
-					 ihfc | isic | itjc | iwic
-i4b/layer1/i4b_l1lib.c		optional ifpi | ifpi2 | ifpnp | \
-					 ihfc | isic | itjc | iwic
-#
-# isdn4bsd, isic
-#
-i4b/layer1/isic/i4b_asuscom_ipac.c optional isic
-i4b/layer1/isic/i4b_avm_a1.c	optional isic
-i4b/layer1/isic/i4b_bchan.c	optional isic
-i4b/layer1/isic/i4b_ctx_s0P.c	optional isic
-i4b/layer1/isic/i4b_drn_ngo.c	optional isic
-i4b/layer1/isic/i4b_dynalink.c	optional isic
-i4b/layer1/isic/i4b_elsa_qs1i.c	optional isic
-i4b/layer1/isic/i4b_elsa_qs1p.c	optional isic pci
-i4b/layer1/isic/i4b_elsa_pcc16.c optional isic
-i4b/layer1/isic/i4b_hscx.c	optional isic
-i4b/layer1/isic/i4b_isac.c	optional isic
-i4b/layer1/isic/i4b_isic.c	optional isic
-i4b/layer1/isic/i4b_isic_isa.c	optional isic
-i4b/layer1/isic/i4b_isic_pnp.c	optional isic
-i4b/layer1/isic/i4b_itk_ix1.c	optional isic
-i4b/layer1/isic/i4b_l1.c	optional isic
-i4b/layer1/isic/i4b_l1fsm.c	optional isic
-i4b/layer1/isic/i4b_siemens_isurf.c optional isic
-i4b/layer1/isic/i4b_sws.c	optional isic
-i4b/layer1/isic/i4b_tel_s016.c	optional isic
-i4b/layer1/isic/i4b_tel_s0163.c	optional isic
-i4b/layer1/isic/i4b_tel_s08.c	optional isic
-i4b/layer1/isic/i4b_usr_sti.c	optional isic
-i4b/layer1/isic/i4b_diva.c	optional isic
-#
-# isdn4bsd, iwic
-#
-i4b/layer1/iwic/i4b_iwic_pci.c	optional iwic pci
-i4b/layer1/iwic/i4b_iwic_dchan.c optional iwic pci
-i4b/layer1/iwic/i4b_iwic_bchan.c optional iwic pci
-i4b/layer1/iwic/i4b_iwic_fsm.c	optional iwic pci
-i4b/layer1/iwic/i4b_iwic_l1if.c	optional iwic pci
-#
-# isdn4bsd, ifpi
-#
-i4b/layer1/ifpi/i4b_ifpi_pci.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_isac.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_l1.c	optional ifpi pci
-i4b/layer1/ifpi/i4b_ifpi_l1fsm.c optional ifpi pci
-#
-# isdn4bsd, ifpi2
-#
-i4b/layer1/ifpi2/i4b_ifpi2_pci.c optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_isacsx.c optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_l1.c	optional ifpi2 pci
-i4b/layer1/ifpi2/i4b_ifpi2_l1fsm.c optional ifpi2 pci
-#
-# isdn4bsd, ifpnp
-#
-i4b/layer1/ifpnp/i4b_ifpnp_avm.c optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_isac.c optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_l1.c	 optional ifpnp
-i4b/layer1/ifpnp/i4b_ifpnp_l1fsm.c optional ifpnp
-#
-# isdn4bsd, ihfc
-#
-i4b/layer1/ihfc/i4b_ihfc_l1if.c	optional ihfc
-i4b/layer1/ihfc/i4b_ihfc_pnp.c	optional ihfc
-i4b/layer1/ihfc/i4b_ihfc_drv.c	optional ihfc
-#
-# isdn4bsd, itjc
-#
-i4b/layer1/itjc/i4b_itjc_pci.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_isac.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_l1.c	optional itjc
-i4b/layer1/itjc/i4b_itjc_l1fsm.c optional itjc
-#
 kern/imgact_aout.c		optional compat_aout
 kern/imgact_gzip.c		optional gzip
 libkern/divdi3.c		standard