Comment 2 for bug 581697

Tested on mawson as follows:

  $ mkdir syncs
  $ cd syncs
  $ export http_proxy=http://squid.internal:3128/
  $ wget --no-cache -O- http://ftp.debian.org/debian/dists/unstable/main/source/Sources.gz | gunzip -c > Debian_unstable_main_Sources
  $ /srv/launchpad.net/codelines/current/scripts/ftpmaster-tools/sync-source.py bglibs
  Getting binaries for lucid...
  [Updating] bglibs (1.104-2 [Ubuntu] < 1.106-1 [Debian])
   * Trying to add bglibs...
  2010-05-28 10:02:31 INFO - <bglibs_1.106-1.diff.gz: downloading from http://ftp.debian.org/debian/>
  2010-05-28 10:02:31 INFO - <bglibs_1.106-1.dsc: downloading from http://ftp.debian.org/debian/>
  2010-05-28 10:02:31 INFO - <bglibs_1.106.orig.tar.gz: downloading from http://ftp.debian.org/debian/>
  I: bglibs [universe] -> libbg1_1.104-2 [universe].
  I: bglibs [universe] -> libbg1-dev_1.104-2 [universe].
  I: bglibs [universe] -> libbg1-doc_1.104-2 [universe].
  $ sed -n '/^Files:/,$p' bglibs_1.106-1_source.changes
  Files:
   6fa484115c4a0a4905af41167caa2309 6177 - optional bglibs_1.106-1.diff.gz
   b97a6a2321c6744603a6ea2f82eecabc 939 - optional bglibs_1.106-1.dsc
   99bf5936456c7661c329beab63d2b520 481564 - optional bglibs_1.106.orig.tar.gz