add a note to the docs about static Qt plugins

doc/index.html

@@ -333,6 +333,11 @@ If a cross compiler is detected then cross compile mode will be used.</pre>
     </p>
     <pre><span class="target">i686-pc-mingw32</span>-qmake
 make</pre>
+    <p>
+    Since Qt is provided as static library,
+    you should also have a look at the
+    <a href="http://qt.nokia.com/doc/plugins-howto.html#static-plugins">Qt documentation about static plugins</a>.
+    </p>
 
     <h3>Step 5c: Cross compile your Project (Makefile)</h3>