3 files changed, 134 insertions, 97 deletions

diff --git a/config.guess b/config.guess
index 59d4b87a5..e8c6fc0c3 100755
--- a/config.guess
+++ b/config.guess
@@ -3,7 +3,7 @@
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
 #   2000, 2001, 2002, 2003 Free Software Foundation, Inc.
 
-timestamp='2003-10-07'
+timestamp='2004-01-05'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -176,7 +176,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
                 fi
                 ;;
             *)
-                os=netbsd
+                os=netbsd
                 ;;
         esac
         # The OS release
@@ -221,6 +221,9 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     mvmeppc:OpenBSD:*:*)
         echo powerpc-unknown-openbsd${UNAME_RELEASE}
         exit 0 ;;
+    pegasos:OpenBSD:*:*)
+        echo powerpc-unknown-openbsd${UNAME_RELEASE}
+        exit 0 ;;
     pmax:OpenBSD:*:*)
         echo mipsel-unknown-openbsd${UNAME_RELEASE}
         exit 0 ;;
@@ -307,6 +310,9 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     *:OS/390:*:*)
         echo i370-ibm-openedition
         exit 0 ;;
+    *:OS400:*:*)
+        echo powerpc-ibm-os400
+        exit 0 ;;
     arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
         echo arm-acorn-riscix${UNAME_RELEASE}
         exit 0;;
@@ -382,23 +388,23 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     # MiNT.  But MiNT is downward compatible to TOS, so this should
     # be no problem.
     atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
+        echo m68k-atari-mint${UNAME_RELEASE}
         exit 0 ;;
     atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
         echo m68k-atari-mint${UNAME_RELEASE}
-        exit 0 ;;
+        exit 0 ;;
     *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
+        echo m68k-atari-mint${UNAME_RELEASE}
         exit 0 ;;
     milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
-        echo m68k-milan-mint${UNAME_RELEASE}
-        exit 0 ;;
+        echo m68k-milan-mint${UNAME_RELEASE}
+        exit 0 ;;
     hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
-        echo m68k-hades-mint${UNAME_RELEASE}
-        exit 0 ;;
+        echo m68k-hades-mint${UNAME_RELEASE}
+        exit 0 ;;
     *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
-        echo m68k-unknown-mint${UNAME_RELEASE}
-        exit 0 ;;
+        echo m68k-unknown-mint${UNAME_RELEASE}
+        exit 0 ;;
     powerpc:machten:*:*)
         echo powerpc-apple-machten${UNAME_RELEASE}
         exit 0 ;;
@@ -464,8 +470,8 @@ EOF
         echo m88k-motorola-sysv3
         exit 0 ;;
     AViiON:dgux:*:*)
-        # DG/UX returns AViiON for all architectures
-        UNAME_PROCESSOR=`/usr/bin/uname -p`
+        # DG/UX returns AViiON for all architectures
+        UNAME_PROCESSOR=`/usr/bin/uname -p`
         if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
         then
             if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
@@ -478,7 +484,7 @@ EOF
         else
             echo i586-dg-dgux${UNAME_RELEASE}
         fi
-        exit 0 ;;
+        exit 0 ;;
     M88*:DolphinOS:*:*) # DolphinOS (SVR3)
         echo m88k-dolphin-sysv3
         exit 0 ;;
@@ -574,52 +580,52 @@ EOF
             9000/[678][0-9][0-9])
                 if [ -x /usr/bin/getconf ]; then
                     sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
-                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
-                    case "${sc_cpu_version}" in
-                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
-                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
-                      532)                      # CPU_PA_RISC2_0
-                        case "${sc_kernel_bits}" in
-                          32) HP_ARCH="hppa2.0n" ;;
-                          64) HP_ARCH="hppa2.0w" ;;
+                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+                    case "${sc_cpu_version}" in
+                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+                      532)                      # CPU_PA_RISC2_0
+                        case "${sc_kernel_bits}" in
+                          32) HP_ARCH="hppa2.0n" ;;
+                          64) HP_ARCH="hppa2.0w" ;;
                           '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
-                        esac ;;
-                    esac
+                        esac ;;
+                    esac
                 fi
                 if [ "${HP_ARCH}" = "" ]; then
                     eval $set_cc_for_build
                     sed 's/^              //' << EOF >$dummy.c
 
-              #define _HPUX_SOURCE
-              #include <stdlib.h>
-              #include <unistd.h>
+              #define _HPUX_SOURCE
+              #include <stdlib.h>
+              #include <unistd.h>
 
-              int main ()
-              {
-              #if defined(_SC_KERNEL_BITS)
-                  long bits = sysconf(_SC_KERNEL_BITS);
-              #endif
-                  long cpu  = sysconf (_SC_CPU_VERSION);
+              int main ()
+              {
+              #if defined(_SC_KERNEL_BITS)
+                  long bits = sysconf(_SC_KERNEL_BITS);
+              #endif
+                  long cpu  = sysconf (_SC_CPU_VERSION);
 
-                  switch (cpu)
-                {
-                case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
-                case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
-                case CPU_PA_RISC2_0:
-              #if defined(_SC_KERNEL_BITS)
-                    switch (bits)
-                        {
-                        case 64: puts ("hppa2.0w"); break;
-                        case 32: puts ("hppa2.0n"); break;
-                        default: puts ("hppa2.0"); break;
-                        } break;
-              #else  /* !defined(_SC_KERNEL_BITS) */
-                    puts ("hppa2.0"); break;
-              #endif
-                default: puts ("hppa1.0"); break;
-                }
-                  exit (0);
-              }
+                  switch (cpu)
+                {
+                case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+                case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+                case CPU_PA_RISC2_0:
+              #if defined(_SC_KERNEL_BITS)
+                    switch (bits)
+                        {
+                        case 64: puts ("hppa2.0w"); break;
+                        case 32: puts ("hppa2.0n"); break;
+                        default: puts ("hppa2.0"); break;
+                        } break;
+              #else  /* !defined(_SC_KERNEL_BITS) */
+                    puts ("hppa2.0"); break;
+              #endif
+                default: puts ("hppa1.0"); break;
+                }
+                  exit (0);
+              }
 EOF
                     (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
                     test -z "$HP_ARCH" && HP_ARCH=hppa
@@ -699,22 +705,22 @@ EOF
         exit 0 ;;
     C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
         echo c1-convex-bsd
-        exit 0 ;;
+        exit 0 ;;
     C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
         if getsysinfo -f scalar_acc
         then echo c32-convex-bsd
         else echo c2-convex-bsd
         fi
-        exit 0 ;;
+        exit 0 ;;
     C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
         echo c34-convex-bsd
-        exit 0 ;;
+        exit 0 ;;
     C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
         echo c38-convex-bsd
-        exit 0 ;;
+        exit 0 ;;
     C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
         echo c4-convex-bsd
-        exit 0 ;;
+        exit 0 ;;
     CRAY*Y-MP:*:*:*)
         echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
         exit 0 ;;
@@ -738,9 +744,14 @@ EOF
         exit 0 ;;
     F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
         FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
-        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+        exit 0 ;;
+    5000:UNIX_System_V:4.*:*)
+        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+        FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
         exit 0 ;;
     i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
         echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
@@ -874,7 +885,7 @@ EOF
           EV6)   UNAME_MACHINE=alphaev6 ;;
           EV67)  UNAME_MACHINE=alphaev67 ;;
           EV68*) UNAME_MACHINE=alphaev68 ;;
-        esac
+        esac
         objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
         if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
         echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
@@ -916,7 +927,7 @@ EOF
                                     s/.*supported targets: *//
                                     s/ .*//
                                     p'`
-        case "$ld_supported_targets" in
+        case "$ld_supported_targets" in
           elf32-i386)
                 TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
                 ;;
@@ -968,11 +979,11 @@ EOF
         echo i386-sequent-sysv4
         exit 0 ;;
     i*86:UNIX_SV:4.2MP:2.*)
-        # Unixware is an offshoot of SVR4, but it has its own version
-        # number series starting with 2...
-        # I am not positive that other SVR4 systems won't match this,
+        # Unixware is an offshoot of SVR4, but it has its own version
+        # number series starting with 2...
+        # I am not positive that other SVR4 systems won't match this,
         # I just have to hope.  -- rms.
-        # Use sysv4.2uw... so that sysv4* matches it.
+        # Use sysv4.2uw... so that sysv4* matches it.
         echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
         exit 0 ;;
     i*86:OS/2:*:*)
@@ -986,6 +997,9 @@ EOF
     i*86:atheos:*:*)
         echo ${UNAME_MACHINE}-unknown-atheos
         exit 0 ;;
+        i*86:syllable:*:*)
+        echo ${UNAME_MACHINE}-pc-syllable
+        exit 0 ;;
     i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
         echo i386-unknown-lynxos${UNAME_RELEASE}
         exit 0 ;;
@@ -1028,10 +1042,10 @@ EOF
         exit 0 ;;
     pc:*:*:*)
         # Left here for compatibility:
-        # uname -m prints for DJGPP always 'pc', but it prints nothing about
-        # the processor, so we play safe by assuming i386.
+        # uname -m prints for DJGPP always 'pc', but it prints nothing about
+        # the processor, so we play safe by assuming i386.
         echo i386-pc-msdosdjgpp
-        exit 0 ;;
+        exit 0 ;;
     Intel:Mach:3*:*)
         echo i386-pc-mach3
         exit 0 ;;
@@ -1066,8 +1080,8 @@ EOF
         /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
           && echo i586-ncr-sysv4.3${OS_REL} && exit 0 ;;
     3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
-        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-          && echo i486-ncr-sysv4 && exit 0 ;;
+        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+          && echo i486-ncr-sysv4 && exit 0 ;;
     m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
         echo m68k-unknown-lynxos${UNAME_RELEASE}
         exit 0 ;;
@@ -1101,9 +1115,9 @@ EOF
         fi
         exit 0 ;;
     PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
-                      # says <Richard.M.Bartel@ccMail.Census.GOV>
-        echo i586-unisys-sysv4
-        exit 0 ;;
+                      # says <Richard.M.Bartel@ccMail.Census.GOV>
+        echo i586-unisys-sysv4
+        exit 0 ;;
     *:UNIX_System_V:4*:FTX*)
         # From Gerald Hewes <hewes@openmarket.com>.
         # How about differentiating between stratus architectures? -djm
@@ -1125,11 +1139,11 @@ EOF
         exit 0 ;;
     R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
         if [ -d /usr/nec ]; then
-                echo mips-nec-sysv${UNAME_RELEASE}
+                echo mips-nec-sysv${UNAME_RELEASE}
         else
-                echo mips-unknown-sysv${UNAME_RELEASE}
+                echo mips-unknown-sysv${UNAME_RELEASE}
         fi
-        exit 0 ;;
+        exit 0 ;;
     BeBox:BeOS:*:*)     # BeOS running on hardware made by Be, PPC only.
         echo powerpc-be-beos
         exit 0 ;;
@@ -1172,7 +1186,7 @@ EOF
     *:QNX:*:4*)
         echo i386-pc-qnx
         exit 0 ;;
-    NSR-[DGKLNPTVWY]:NONSTOP_KERNEL:*:*)
+    NSR-?:NONSTOP_KERNEL:*:*)
         echo nsr-tandem-nsk${UNAME_RELEASE}
         exit 0 ;;
     *:NonStop-UX:*:*)
@@ -1216,6 +1230,9 @@ EOF
     SEI:*:*:SEIUX)
         echo mips-sei-seiux${UNAME_RELEASE}
         exit 0 ;;
+    *:DRAGONFLY:*:*)
+        echo ${UNAME_MACHINE}-unknown-dragonfly${UNAME_RELEASE}
+        exit 0 ;;
 esac
 
 #echo '(No uname command or uname output not recognized.)' 1>&2
@@ -1238,11 +1255,11 @@ main ()
 #include <sys/param.h>
   printf ("m68k-sony-newsos%s\n",
 #ifdef NEWSOS4
-          "4"
+          "4"
 #else
           ""
 #endif
-         ); exit (0);
+         ); exit (0);
 #endif
 #endif
 
diff --git a/config.sub b/config.sub
index d77dd77b4..463186dbf 100755
--- a/config.sub
+++ b/config.sub
@@ -3,7 +3,7 @@
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
 #   2000, 2001, 2002, 2003 Free Software Foundation, Inc.
 
-timestamp='2003-10-07'
+timestamp='2004-01-05'
 
 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
@@ -118,7 +118,8 @@ esac
 # Here we must recognize all the valid KERNEL-OS combinations.
 maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
-  nto-qnx* | linux-gnu* | linux-dietlibc | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | storm-chaos* | os2-emx* | rtmk-nova*)
+  nto-qnx* | linux-gnu* | linux-dietlibc | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | \
+  kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | storm-chaos* | os2-emx* | rtmk-nova*)
     os=-$maybe_os
     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
     ;;
@@ -162,10 +163,10 @@ case $os in
                 os=-chorusos
                 basic_machine=$1
                 ;;
-        -chorusrdb)
-                os=-chorusrdb
+        -chorusrdb)
+                os=-chorusrdb
                 basic_machine=$1
-                ;;
+                ;;
         -hiux*)
                 os=-hiuxwe2
                 ;;
@@ -379,6 +380,9 @@ case $basic_machine in
         amd64)
                 basic_machine=x86_64-pc
                 ;;
+        amd64-*)
+                basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+                ;;
         amdahl)
                 basic_machine=580-amdahl
                 os=-sysv
@@ -743,6 +747,10 @@ case $basic_machine in
                 basic_machine=or32-unknown
                 os=-coff
                 ;;
+        os400)
+                basic_machine=powerpc-ibm
+                os=-os400
+                ;;
         OSE68000 | ose68000)
                 basic_machine=m68000-ericsson
                 os=-ose
@@ -926,10 +934,6 @@ case $basic_machine in
                 basic_machine=sv1-cray
                 os=-unicos
                 ;;
-        sx*-nec)
-                basic_machine=sx6-nec
-                os=-sysv
-                ;;
         symmetry)
                 basic_machine=i386-sequent
                 os=-dynix
@@ -967,6 +971,10 @@ case $basic_machine in
         tower | tower-32)
                 basic_machine=m68k-ncr
                 ;;
+        tpf)
+                basic_machine=s390x-ibm
+                os=-tpf
+                ;;
         udi29k)
                 basic_machine=a29k-amd
                 os=-udi
@@ -1010,10 +1018,6 @@ case $basic_machine in
                 basic_machine=hppa1.1-winbond
                 os=-proelf
                 ;;
-        windows32)
-                basic_machine=i386-pc
-                os=-windows32-msvcrt
-                ;;
         xps | xps100)
                 basic_machine=xps100-honeywell
                 ;;
@@ -1110,8 +1114,8 @@ esac
 if [ x"$os" != x"" ]
 then
 case $os in
-        # First match some system type aliases
-        # that might get confused with valid system types.
+        # First match some system type aliases
+        # that might get confused with valid system types.
         # -solaris* is a basic system type, with this one exception.
         -solaris1 | -solaris1.*)
                 os=`echo $os | sed -e 's|solaris1|sunos4|'`
@@ -1145,13 +1149,13 @@ case $os in
               | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
               | -chorusos* | -chorusrdb* \
               | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-              | -mingw32* | -linux-gnu* | -uxpv* | -beos* | -mpeix* | -udk* \
+              | -mingw32* | -linux-gnu* | -linux-uclibc* | -uxpv* | -beos* | -mpeix* | -udk* \
               | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
               | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
               | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
               | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
               | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
-              | -powermax* | -dnix* | -nx6 | -nx7 | -sei*)
+              | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly*)
         # Remember, each alternative MUST END IN *, to match a version number.
                 ;;
         -qnx*)
@@ -1190,6 +1194,9 @@ case $os in
         -opened*)
                 os=-openedition
                 ;;
+        -os400*)
+                os=-os400
+                ;;
         -wince*)
                 os=-wince
                 ;;
@@ -1211,6 +1218,9 @@ case $os in
         -atheos*)
                 os=-atheos
                 ;;
+        -syllable*)
+                os=-syllable
+                ;;
         -386bsd)
                 os=-bsd
                 ;;
@@ -1233,6 +1243,9 @@ case $os in
         -sinix*)
                 os=-sysv4
                 ;;
+        -tpf*)
+                os=-tpf
+                ;;
         -triton*)
                 os=-sysv3
                 ;;
@@ -1481,9 +1494,15 @@ case $basic_machine in
                         -mvs* | -opened*)
                                 vendor=ibm
                                 ;;
+                        -os400*)
+                                vendor=ibm
+                                ;;
                         -ptx*)
                                 vendor=sequent
                                 ;;
+                        -tpf*)
+                                vendor=ibm
+                                ;;
                         -vxsim* | -vxworks* | -windiss*)
                                 vendor=wrs
                                 ;;
diff --git a/debian/changelog b/debian/changelog
index c15d3c7e0..5a05d0f3e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -21,6 +21,7 @@ openssh (1:3.8p1-1) UNRELEASED; urgency=low
     ssh_config(5) for details.
   * Remove -fno-builtin-log, -DHAVE_MMAP_ANON_SHARED, and
     -D__FILE_OFFSET_BITS=64 compiler options, which are no longer necessary.
+  * Update config.guess and config.sub from autotools-dev 20040105.1.
   * Darren Tucker:
     - Reset signal status when starting pam auth thread, prevent hanging
       during PAM keyboard-interactive authentications.