Code review of torsocks 2.x

Code review by the Torproject of the new torsocks version created to replace the current 1.3 version.

Code: https://github.com/dgoulet/torsocks

History and Why?: https://lists.torproject.org/pipermail/tor-dev/2013-June/004959.html

August 24th, RC 1: https://lists.torproject.org/pipermail/tor-dev/2013-August/005319.html Sept 2th, RC 2: https://lists.torproject.org/pipermail/tor-dev/2013-September/005359.html

Right now, the code is ready for review and still in release candidate until people are comfortable for a stable version to ideally be packaged and distributed.