Add note on thread improvements to libstdc++ changes.
Committed to cvs.
Index: changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v retrieving revision 1.75 diff -u -r1.75 changes.html --- changes.html 5 Feb 2012 15:11:23 -0000 1.75 +++ changes.html 8 Feb 2012 00:42:40 -0000 @@ -412,6 +412,7 @@ <li> uses-allocator construction for <code>tuple</code>; </li> <li> <code>vector</code> meets the allocator-aware container requirements; </li> <li> replacing <code>monotonic_clock</code> with <code>steady_clock</code>; </li> + <li> enabling the thread support library on a wider range of targets; </li> <li> many small improvements to conform to the FDIS. </li> </ul> </li>