prefix "Boost" to the HTML title for context-free identification

[SVN r8867]

libs/libraries.htm

@@ -5,7 +5,7 @@
 content="text/html; charset=iso-8859-1">
 <meta name="ProgId" content="FrontPage.Editor.Document">
 <meta name="GENERATOR" content="Microsoft FrontPage 4.0">
-<title>Libraries</title>
+<title>Boost Libraries</title>
 <meta name="Microsoft Border" content="none, default">
 </head>