title: missing std::runtime_error in qt+mingw
body: <p>I've tried to compile the following code using Qt(4.6.3) + MinGW:</p>
  
  <pre><code>#include &lt;QtCore/QCoreApplication&gt;
  #include &lt;exception&gt;
  
  int main(int argc, char *argv[])
  {
      throw std::runtime_error("");
  
      QCoreApplication a(argc, argv);
  
      return a.exec();
  }
  </code></pre>
  
  <p>... and got this error: </p>
  
  <pre><code>..\untitled11\main.cpp:6: error: 'runtime_error' is not a member of 'std'
  </code></pre>
  
  <p>Project created from scratch(console application), the pro file:</p>
  
  <pre><code>QT       += core
  
  QT       -= gui
  
  TARGET = untitled11
  CONFIG   += console
  CONFIG   -= app_bundle
  
  TEMPLATE = app
  
  SOURCES += main.cpp
  </code></pre>
  
  <p>Tried to compile this using Qt+MSVC2008 compiler - works fine.</p>
  
  <p>This is a standard exception, have no idea why is missing.</p>