Bug#431194: lprng: install error when lp group not exists

[Fabien Bochu <fabien.bochu@gmail.com>]

Package: lprng
Version: 3.8.28dfsg.1-1.1
Severity: minor

I have this error message :

Paramétrage de lprng (3.8.28dfsg.1-1.1) ...
install: groupe invalide 'lp'

adds lp group solve this problem

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.21-2-686 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages lprng depends on:
ii  debconf  1.5.13                          Debian configuration management sy
ii  libc6    2.5-11                          GNU C Library: Shared libraries
ii  libcomer 1.39+1.40-WIP-2007.04.07+dfsg-2 common error description library
ii  libkrb53 1.6.dfsg.1-5                    MIT Kerberos runtime libraries
ii  libssl0. 0.9.8e-5                        SSL shared libraries
ii  lsb-base 3.1-23.1                        Linux Standard Base 3.1 init scrip

lprng recommends no packages.

-- debconf information:
  lprng/setuid_tools: false
* lprng/start_lpd: false
  lprng/twolpd_perms:
  lprng/twolpd_conf: