Bug#181073: apt: maybe have apt-cache show failed installation information

[Dan Jacobson <jidanni@dman.ddts.net>]

Package: apt
Version: 0.5.4
Severity: wishlist
File: /usr/bin/apt-cache

dpkg says this package is not installed, but rather Failed-config

      # dpkg -l noffle
      Desired=Unknown/Install/Remove/Purge/Hold
      | Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
      |/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
      ||/ Name               Version            Description
      +++-==================-==================-===============
      iF  noffle             1.1.4-1            offline news server

therefore, it might be nice if we were to see some clue that all was
not hunky dory here too:

   # apt-cache policy noffle
   noffle:
     Installed: 1.1.4-1
     Candidate: 1.1.4-1
     Version Table:
    *** 1.1.4-1 0
	   100 /var/lib/dpkg/status
	1.1.3-1 0
	   500 http://debian.linux.org.tw sid/main Packages
	1.0.1-1 0
	   500 cdrom://[Debian GNU/Linux ...

-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux debian 2.4.19-k7 #1 Sun Oct 6 20:29:56 EST 2002 i686
Locale: LANG=zh_TW.Big5, LC_CTYPE=zh_TW.Big5

Versions of packages apt depends on:
ii  libc6                        2.3.1-10    GNU C Library: Shared libraries an
ii  libstdc++2.10-glibc2.2       1:2.95.4-15 The GNU stdc++ library

-- no debconf information