Bug#203299: /usr/bin/apt-cache: need --no-all-versions from subshell

[Dan Jacobson <jidanni@jidanni.org>]

Package: apt
Version: 0.5.7
Severity: normal
File: /usr/bin/apt-cache

$ apt-cache show mozilla|wc
     22     103     836
$ sh -c 'apt-cache show mozilla'|wc
     61     293    2343
$ sh -c 'apt-cache --no-all-versions show mozilla'|wc
     22     103     836

I didn't touch APT::Cache::AllVersions, and it isn't in apt-config dump.