* gnu/packages/tor.scm (torsocks): Update to 2.0.0.
[source]: Fetch from git.torproject.org. Use
'torsocks-dns-test.patch'.
[arguments, native-inputs]: New fields.
[license]: Change to GPL2.
* gnu/packages/patches/torsocks-dns-test.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.