docs: added initial page for c# binding, with links to it

Adds a new page for the C# language bindings being developed by Arnaud
Champion.

docs/bindings.html.in

@@ -15,7 +15,7 @@ higher level kind of languages:</p>
       <li><strong>OCaml</strong>: Richard Jones supplies <a href="http://libvirt.org/ocaml/">bindings for OCaml</a>.</li>
       <li><strong>Ruby</strong>: David Lutterkort provides <a href="http://libvirt.org/ruby/">bindings for Ruby</a>.</li>
       <li><strong>Java</strong>: Daniel Veillard maintains <a href="java.html">Java bindings</a>.</li>
-      <li><strong>C#</strong>: Jarom&iacute;r &#x010C;ervenka maintains <a href="http://svn.i-tux.cz/listing.php?repname=SharpLibVirt">C# bindings here</a>.</li>
+      <li><strong>C#</strong>: Arnaud Champion maintains <a href="csharp.html">C# bindings</a>.</li>
       <li><strong>PHP</strong>: Radek Hladik is developing <a href="http://phplibvirt.cybersales.cz/">PHP bindings</a>.</li>
     </ul>
     <p>For information on using libvirt on <strong>Windows</strong>

docs/sitemap.html.in

@@ -242,6 +242,10 @@
                 <a href="java.html">Java</a>
                 <span>overview of the Java API bindings</span>
               </li>
+              <li>
+                <a href="csharp.html">C#</a>
+                <span>overview of the C# API bindings</span>
+              </li>
             </ul>
           </li>
           <li>