title: Clang-format align multiple function parameters
body: <p>I would like to configure clang-format to do this :</p>
  <p>from</p>
  <pre><code>void test1 (int p);
  void long_name (int p);
  </code></pre>
  <p>to</p>
  <pre><code>void test1     (int p);
  void long_name (int p);
  </code></pre>