Add support for java.nio.Buffer

including test-suite test case and documentation

Doc/Manual/Java.html

@@ -5490,6 +5490,15 @@ These are listed below:
 <td>Use for mapping NULL terminated arrays of C strings to Java String arrays</td>
 </tr>
 
+<tr>
+<td>unsigned char *</td>
+<td>NIOBUFFER</td>
+<td>various.i</td>
+<td>input<br> output</td>
+<td>java.nio.Buffer</td>
+<td>Use for mapping directly allocated buffers to c/c++. useful with directors and long lived memory objects</td>
+</tr>
+
 </table>
 
 <H3><a name="Java_typemap_attributes"></a>25.9.6 Java typemap attributes</H3>