networkless apt-get update removes gpg files

[Michael Vogt]

Binary package hint: apt

A apt-get update on a networkless system removes gpg files. This leads to the "package can not get authenticated" warnings.

Steps to reproduce:
1. run apt-get update
2. run ls /var/lib/apt/lists/*gpg
3. verify that there is output
4. unplug the network
5. run apt-get update
6. run ls /var/lib/apt/lists/*gpg
7. verify that there is no output

Install the fix in hardy-proposed, run tests 1-7 again and verify that in (7) there is output this time.

[Michael Vogt (mvo)]

I put a fixed apt in my PPA at:

https://edge.launchpad.net/~mvo/+archive
(debline:
deb http://ppa.launchpad.net/mvo/ubuntu hardy main
)

[Martin Pitt (pitti)]

 apt (0.7.9ubuntu17) hardy; urgency=low
 .
   * apt-pkg/acquire-item.cc:
     - fix signaure removal on transient network failures
       (thanks to Scott James Remnant)