title: GLenum and GLint not declared when using GL Load
body: <p>Something like this doesn't compile because <code>GLenum</code> and <code>GLint</code> aren't declared in namespace <code>gl</code>:</p>
  
  <pre><code>#include &lt;glload/gl_3_3.hpp&gt;
  #include &lt;glload/gll.hpp&gt;
  
  void foo(gl::GLenum, gl::GLint);
  </code></pre>
  
  <p>How can I use <code>GLenum</code> and <code>GLint</code> with GL Load?</p>