title: Qt3D compile with Qt5 failed
body: <p>I'm having troubles compiling Qt3D on Windows. The module compiles and links properly on my Linux machine with Qt 4.8.1. Though on Windows (Qt 5.2 personal build) g++ says <code>&lt;Qt3D/qt3dglobal.h&gt;</code> header is not found.</p>
  
  <p>I've compiled qt3d on linux with following these steps:</p>
  
  <ol>
  <li>Download a tarball of branch qt4 from <a href="https://qt.gitorious.org/qt/qt3d/source/fdad0d7f39dfbc883372628fcc58c1194ab0b782%3a" rel="nofollow">here</a>, extract it.</li>
  <li>qmake CONFIG+=package</li>
  <li>make -j4</li>
  <li>sudo make install</li>
  </ol>
  
  <p>And for Windows (Qt 5.2 gcc-4.8.1 personal build):</p>
  
  <ol>
  <li>Download tarball of master branch from <a href="https://qt.gitorious.org/qt/qt3d/source/d3338a9f7fcac109d7bc7f600d5974ff333782ad%3a" rel="nofollow">here</a>, extract it</li>
  <li>qmake </li>
  <li>make // => error: missing headers</li>
  </ol>
  
  <p>What I'm missing?</p>
  
  <p>Note: ActiveState Perl is in PATH</p>