Add program_options news.

[SVN r29944]

index.htm

@@ -433,6 +433,30 @@
                       </ul>
                     </li>
 
+                    <li>
+                      <span class="library"><a href=
+                      "libs/program_options/doc/index.html">Program options library</a>:</span>
+
+                      <ul>
+                        <li>Option descriptions are now printed with
+                        word wrapping.</li>
+
+                        <li>Command line parser can bypass unregistered
+                        options, instread of throwing.</li>
+
+                        <li>Removed support for "implicit" (optional) values.</li>
+
+                        <li>New customization method
+                            'command_line_parser::extra_style_parser'. Unlike
+                            'additional_parser', allows the user to parse
+                            several tokens and return a vector of options, not
+                            just a single option.</li>
+
+                        <li>Work with disabled exceptions.</li>
+                          
+                      </ul>
+                    </li>
+
                     <li><span class="library"><a href=
                     "libs/property_map/property_map.html">Property Map
                     Library</a>:</span> Introduced the <a href=