Have torsocks 2.1 in wheezy-backports-sloppy

It has a feature we need (allowing connections to localhost) for #8054 (closed). Those of us running check-mirrors from within Tails will need it until Tails is based on Jessie.

Parent Task: #8054 (closed)

Related issues

Blocked by #9548 (closed)

Original created by @intrigeri on 9549 (Redmine)

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