brought tree up-to-date with matt

Patches applied:

 * apt@packages.debian.org/apt--main--0--patch-15
   Merge changes from Hoary (0.5.30,0.5.30ubuntu2]

 * apt@packages.debian.org/apt--main--0--patch-16
   Remove apt-utils->bzip2 dependency

 * apt@packages.debian.org/apt--main--0--patch-17
   Fix apt_preferences(5) example to match text

 * apt@packages.debian.org/apt--main--0--patch-18
   Fix permissions

 * apt@packages.debian.org/apt--main--0--patch-19
   Add APT::Periodic::Autoclean setting

 * apt@packages.debian.org/apt--main--0--patch-20
   Finalize 0.5.31

 * apt@packages.debian.org/apt--main--0--patch-21
   Open 0.5.32

 * apt@packages.debian.org/apt--main--0--patch-22
   Call setlocale and bindtextdomain in the http method

 * apt@packages.debian.org/apt--main--0--patch-23
   Fix error in patch-22

 * apt@packages.debian.org/apt--main--0--patch-24
   Temporarily finalize 0.5.32 to resolve a conflict with apt--authentication--0

 * apt@packages.debian.org/apt--main--0--patch-25
   Un-finalize 0.5.32

 * apt@packages.debian.org/apt--main--0--patch-26
   Update AUTHORS to reflect reality

 * apt@packages.debian.org/apt--main--0--patch-27
   Fix spelling