Homepage: Use GIF for the library icons

Using GIF with a custom color table allowed me to compress these down
to 1/10th of their original size.

web/html/libraryicons.html

@@ -1,13 +1,14 @@
 <div id="groupa" class="hnav">
     <ul>
-    <li><a href="http://www.opengl.org/" title="OpenGL" rel="nofollow"><img src="http://code.iki.fi/dengine.net/images/opengllogo.png" alt="OpenGL logo" /></a></li>
-    <li><a href="http://www.openal.org/" title="OpenAL" rel="nofollow"><img src="http://code.iki.fi/dengine.net/images/openallogo.png" alt="OpenAL logo" /></a></li>
-    <li><a href="http://www.libsdl.org/" title="SDL" rel="nofollow"><img src="http://code.iki.fi/dengine.net/images/sdllogo.png" alt="SDL logo" /></a></li>
+    <li><a href="http://www.opengl.org/" title="OpenGL" rel="nofollow"><img src="images/opengllogo.gif" alt="OpenGL logo" /></a></li>
+    <li><a href="http://www.fmod.org/" title="FMOD" rel="nofollow"><img src="images/fmodlogo.gif" alt="FMOD logo" /></a></li>
+    <li><a href="http://www.openal.org/" title="OpenAL" rel="nofollow"><img src="images/openallogo.gif" alt="OpenAL logo" /></a></li>
     </ul>
 </div>
 <div id="groupb" class="hnav">
     <ul>
-    <li><a href="http://curl.haxx.se/" title="cURL" rel="nofollow"><img src="http://code.iki.fi/dengine.net/images/curllogo.png" alt="cURL logo" /></a></li>
-    <li><a href="http://www.opensource.org/" title="Open Source Foundation" rel="nofollow"><img src="http://code.iki.fi/dengine.net/images/opensourcelogo.png" alt="Open Source Foundation logo" /></a></li>
+    <li><a href="http://www.libsdl.org/" title="SDL" rel="nofollow"><img src="images/sdllogo.gif" alt="SDL logo" /></a></li>
+    <li><a href="http://curl.haxx.se/" title="cURL" rel="nofollow"><img src="images/curllogo.gif" alt="cURL logo" /></a></li>
+    <li><a href="http://www.opensource.org/" title="Open Source Foundation" rel="nofollow"><img src="images/opensourcelogo.gif" alt="Open Source Foundation logo" /></a></li>
     </ul>
 </div>