Build DDL on Wheezy
In order to take benefit of armhf, we need a DDL build based on Debian Wheezy. Whatever our progress on ARM, this is anyway a good idea since the main developer of the Tails distro told me it's much easier to have bugs fixed in Debian unstable/testing than in Debian stable. We then need to regularly test DDL on unstable/testing. An English build is sufficient and a dedicated SVN branch is required.