title: TortoiseGit clone option is unavailable in right-click context menu
body: <p>I have installed Git 2.5.2 64-bit and TortoiseGit 1.8.16.0 64-bit onto my Windows 7 64 bit computer.  I would like to clone a repository but when I right click in windows explorer, I am not seeing an option to clone a repo:</p>
  <p><img src="https://i.stack.imgur.com/ueV8o.png" alt="context menu image" /></p>
  <p>I have gone to TortoiseGit -&gt; Settings -&gt; General -&gt; Context Menu and made sure that the Clone option is checked:</p>
  <p><img src="https://i.stack.imgur.com/pkwMq.png" alt="tortoise git settings menu" /></p>
  <p>I am able to clone a repo using git:</p>
  <pre><code>git clone user@location.com:Group/repo.git myrepo
  </code></pre>
  <p>I can also get TortoiseGit's clone dialog to open via command line:</p>
  <pre><code>TortoiseGitProc.exe /command:clone
  </code></pre>
  <p>but I can't seem to get it to work with TortoiseGit's shell integration.</p>
  <p>Does anyone know why the clone option is not showing up?</p>