add BCB6

[SVN r13987]

more/borland_cpp.html

@@ -80,6 +80,11 @@ lists some known values.
 <td>0x0551</td>
 </tr>
 
+<tr>
+<td>Borland C++ Builder 6</td>
+<td>0x0560</td>
+</tr>
+
 </table>
 
 <h2>Core Language</h2>