Bug#387496: mkvmlinuz: MKPREP variable is not set

[Meelis Roos <mroos@linux.ee>]

Package: mkvmlinuz
Version: 24
Followup-For: Bug #387496

mkvmlinuz version 24 still does not work for linux-image-2.6.18-1-prep 
and bash -x shows that MKPREP variable is unset. As an additional bonud, 
mkvmlinuz does not show the actual error messages on such errors and 
just silently finishes without producing the requested output file.

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: powerpc (ppc)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18
Locale: LANG=et_EE.UTF-8, LC_CTYPE=et_EE.UTF-8 (charmap=UTF-8)

Versions of packages mkvmlinuz depends on:
ii  bash                          3.1-5      The GNU Bourne Again SHell
ii  binutils                      2.17-3     The GNU assembler, linker and bina
ii  debconf [debconf-2.0]         1.5.5      Debian configuration management sy

mkvmlinuz recommends no packages.

-- debconf information:
  mkvmlinuz/bootloaders: mkvmlinuz