boostbookifying lambda

[SVN r23398]

doc/src/boost.xml

@@ -396,20 +396,7 @@
      </libraryinfo>
    </library>
 
-   <library name="Lambda" dirname="lambda" html-only="1">
-     <libraryinfo>
-       <author>
-         <firstname>Jaakko</firstname>
-         <surname>J&auml;rvi</surname>
-       </author>
-       <author>
-         <firstname>Gary</firstname>
-         <surname>Powell</surname>
-       </author>
-       <librarypurpose>Define small unnamed function objects at the actual call site, and more</librarypurpose>
-       <librarycategory name="category:higher-order"/>
-     </libraryinfo>
-   </library>
+   <xi:include href="../../libs/lambda/doc/lambda.xml"/>
 
    <library name="Math" dirname="math" html-only="1">
      <libraryinfo>