URL for Python C++-sig updated

[SVN r34005]

more/mailing_lists.htm

@@ -262,7 +262,7 @@ div.admonition p.admonition-title {
 
       <h3><a name="cplussig" id="cplussig">Python C++-Sig</a> (for
       Boost.Python)</h3>The <a href=
-      "http://www.python.org/sigs/c++-sig/">Python C++-sig</a> is not
+      "http://www.python.org/community/sigs/current/c++-sig/">Python C++-sig</a> is not
       strictly Boost-specific, but nearly all the traffic concerns <a href=
       "../libs/python">Boost.Python</a>. See also the <a href=
       "#langbinding">Language Binding</a> list below. GMane provides <a href=