Bug#285699: [sessreg] fails with error message from Xstartup; users cannot login with xdm

["Jeffrey W. Baker" <jwbaker@acm.org>]

Package: xutils
Version: 4.3.0.dfsg.1-9
Severity: normal

After upgrade th 4.3.1.dfsg.1-9, nobody can login using xdm, although
normal invocation of startx works fine.  The following message appears
in xdm.log:

sessreg: usage sessreg {-a -d} [-w wtmp-file] [-u utmp-file] [-L
lastlog-file]
             [-t ttys-file] [-l line-name] [-h host-name]
             [-s slot-number] [-x servers-file] user-name

I added a line to Xstartup to echo $DISPLAY and $USER to a file in /tmp,
and they seem reasonable (:0 and jwb, respectively).  

I have worked around the problem by removing use-sessreg in in
xdm.options, but with this bug and the default config, nobody can
use xdm.

-- System Information:
Debian Release: 3.1
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.5-SLES9_SP1_BRANCH_2004111114454891_lustre.1.4.0custom
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)

Versions of packages xutils depends on:
ii  cpp                       4:3.3.5-1      The GNU C preprocessor (cpp)
ii  libc6                     2.3.2.ds1-19   GNU C Library: Shared libraries an
ii  libncurses5               5.4-4          Shared libraries for terminal hand
ii  xfree86-common            4.3.0.dfsg.1-9 X Window System (XFree86) infrastr
ii  zlib1g                    1:1.2.2-4      compression library - runtime

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