Warn about the broken typechecking code.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5261 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Doc/Manual/Chicken.html

@@ -519,6 +519,9 @@ CHICKEN_HOME=/usr/local/share/chicken</pre>
       type.  If the Scheme object passed was not a tagged pointer
       representing a compatible pointer, a non-zero value is returned.
     </p>
+    <p><strong>Warning:</strong> The Chicken typechecking code seems
+    to be broken (Bug #782468), so that type errors may not be
+    reported.
 
 <a name="n16"></a><H2>22.8 Unsupported features</H2>
 
@@ -527,4 +530,4 @@ CHICKEN_HOME=/usr/local/share/chicken</pre>
       <li>No exception handling.</li>
     </ul>
   </body>
-</html>
+</html>