[wwwdocs] Mention libstdc++-v3 in 4.9 changes.html

[Tim Shen]

Hi, libstdc++-v3 <regex> is ready for releasing.

Is it Ok to apply? By the way, do we need a News entry for this improvement?

Thanks!

Index: htdocs/gcc-4.9/changes.html
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RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.9/changes.html,v
retrieving revision 1.27
diff -r1.27 changes.html
136a137,140
>     <li><a 
> href="http://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2011";>
>        Improved experimental support for the new ISO C++ standard, C++11</a>,
>        including support for &lt;regex&gt;.
>     </li>


-- 
Tim Shen