Bug#178236: apt-config dump command report invalid data

[ffiorese@franco.homelinux.org (Franco Fiorese)]

Package: apt
Version: 0.5.4

I set in the /etc/apt.conf the APT::Cache-limit value in a wrong way:

 APT::Cache-limit: "7340032"

The error is the semicolon before the value.
Running:

  #apt-confing dump

it does not reports the error and apt-get does not works with that 
value resorting to the default one (6291456 bytes).

If the correct syntax is without the semicolon then apt-config dump
works in a wrong way.

I am using Debian GNU/Linux woody/testing, kernel 2.4.19 
and libc6 2.3.1-3