(GH-812) Upgrade 7zip to 16.02 to address CVEs

Upgrade 7zip to overcome CVE-2016-2334/CVE-2016-2335.

* http://blog.talosintel.com/2016/05/multiple-7-zip-vulnerabilities.html
* https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2334
* https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2335

src/chocolatey.resources/tools/7zip.license.txt

@@ -1,30 +1,56 @@
-      7-Zip Extra
-      ~~~~~~~~~~~
-      License for use and distribution
-      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  7-Zip
+  ~~~~~
+  License for use and distribution
+  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-      Copyright (C) 1999-2015 Igor Pavlov.
+  7-Zip Copyright (C) 1999-2016 Igor Pavlov.
 
-      7-Zip Extra files are under the GNU LGPL license.
+  Licenses for files are:
 
-
-      Notes: 
-        You can use 7-Zip Extra on any computer, including a computer in a commercial 
-        organization. You don't need to register or pay for 7-Zip.
+    1) 7z.dll: GNU LGPL + unRAR restriction
+    2) All other files:  GNU LGPL
 
+  The GNU LGPL + unRAR restriction means that you must follow both 
+  GNU LGPL rules and unRAR restriction rules.
 
-      GNU LGPL information
-      --------------------
 
-        This library is free software; you can redistribute it and/or
-        modify it under the terms of the GNU Lesser General Public
-        License as published by the Free Software Foundation; either
-        version 2.1 of the License, or (at your option) any later version.
+  Note: 
+    You can use 7-Zip on any computer, including a computer in a commercial 
+    organization. You don't need to register or pay for 7-Zip.
 
-        This library is distributed in the hope that it will be useful,
-        but WITHOUT ANY WARRANTY; without even the implied warranty of
-        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-        Lesser General Public License for more details.
 
-        You can receive a copy of the GNU Lesser General Public License from 
-        http://www.gnu.org/
+  GNU LGPL information
+  --------------------
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You can receive a copy of the GNU Lesser General Public License from 
+    http://www.gnu.org/
+
+
+  unRAR restriction
+  -----------------
+
+    The decompression engine for RAR archives was developed using source 
+    code of unRAR program.
+    All copyrights to original unRAR code are owned by Alexander Roshal.
+
+    The license for original unRAR code has the following restriction:
+
+      The unRAR sources cannot be used to re-create the RAR compression algorithm, 
+      which is proprietary. Distribution of modified unRAR sources in separate form 
+      or as a part of other software is permitted, provided that it is clearly
+      stated in the documentation and source comments that the code may
+      not be used to develop a RAR (WinRAR) compatible archiver.
+
+
+  --
+  Igor Pavlov