Added needed license info.

[SVN r34563]

doc/gcc-performance.html

@@ -534,6 +534,10 @@
       <br>
       <br>
       <hr>
-      <p>Copyright John Maddock April 2003, all rights reserved.</p>
+      <p><i>© Copyright John Maddock&nbsp;2003</i></p>
+      <P><I>Use, modification and distribution are subject to the Boost Software License, 
+            Version 1.0. (See accompanying file <A href="../../../LICENSE_1_0.txt">LICENSE_1_0.txt</A>
+            or copy at <A href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</A>)</I></P>
    </body>
 </html>
+