Update to 0.7.0, fixing a security issue.

2014-06-16: 0.7.0 "Kryoptonite"
- Partial IPv6 support (#107)
  Client can connect to iodined through an relaying IPv6
  nameserver. Server only supports IPv4 for now.
  Traffic inside tunnel is IPv4.
- Add socket activation for systemd, by Michael Scherer.
- Add automated lookup of external ip (via -n auto).
- Bugfix for OS X (Can't assign requested address)
- Fix DNS tunneling bug caused by uninitialized variable, #94
- Handle spaces when entering password interactively, fixes #93.
Patch by Hagar.
- Add -R option to set OpenBSD routing domain for the DNS socket.
Patch by laurent at gouloum fr, fixes #95.
- Add android patches and makefile, from Marcel Bokhorst, fixes #105.
- Added missing break in iodine.c, by Pavel Pergamenshchik, #108.
- A number of minor patches from Frank Denis, Gregor Herrmann and
Barak A. Pearlmutter.
- Testcase compilation fixes for OS X and FreeBSD
- Do not let sockets be inherited by sub-processes, fixes #99.
- Add unspecified RR type (called PRIVATE; id 65399, in private use
range). For servers with RFC3597 support. Fixes #97.
- Fix authentication bypass vulnerability; found by Oscar Reparaz.

(wiz)