Merge apt--mvo--0

Merge apt--mvo--0

Patches applied:

 * michael.vogt@canonical.com--2004/apt--mvo--0--patch-12
   * star-merged with matt, removed the unset("no_proxy") in methods/ftp.cc

 * michael.vogt@canonical.com--2004/apt--mvo--0--patch-13
   * commented the ftp no_proxy unseting in methods/ftp.cc

 * michael.vogt@canonical.com--2004/apt--mvo--0--patch-14
   * starmeged with matt, added some comments to the unsetting of no_proxy in ftp.cc

 * michael.vogt@canonical.com--2004/apt--mvo--0--patch-15
   * merged with matt's tree

 * michael.vogt@canonical.com--2004/apt--mvo--0--patch-16
   * added support for "Acquire::gpgv::options" in methods/gpgv.cc

 * michael.vogt@ubuntu.com--2005/apt--mvo--0--base-0
   tag of michael.vogt@canonical.com--2004/apt--mvo--0--patch-16

 * michael.vogt@ubuntu.com--2005/apt--mvo--0--patch-1
   * slightly cosmetic change in methods/gpgv.cc