Fix warnings in lexical_cast found by Boost Inspection program (copyrights restored according to svn history, license text replaced with license name and link to it)

[SVN r85149]

index.html

@@ -6,6 +6,13 @@
 <meta name="GENERATOR" content="Microsoft FrontPage 5.0">
 <meta name="ProgId" content="FrontPage.Editor.Document">
 <title>Boost Conversion Library</title>
+<style>
+   .copyright
+    {
+        color: #666666;
+        font-size: small;
+    }
+</style>
 </head>
 
 <body bgcolor="#FFFFFF" text="#000000">
@@ -32,7 +39,11 @@ supplied by several headers:</p>
 <p>Revised <!--webbot bot="Timestamp" S-Type="EDITED"
 S-Format="%d %B, %Y" startspan -->June 23, 2005<!--webbot bot="Timestamp" endspan i-checksum="30348" -->
 </p>
-
+<p class="copyright">
+    Copyright 2001 Beman Dawes.
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)
+</p>
 </body>
 
-</html>
+</html>