re PR libstdc++/51701 (Remove reference to Henry Suter's RWLock from documentation)

	PR libstdc++/51701
	* doc/xml/manual/extensions.xml (Input and Output): Remove reference
	to RWLock class.

From-SVN: r182724

libstdc++-v3/ChangeLog

+2011-12-29  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+	PR libstdc++/51701
+	* doc/xml/manual/extensions.xml (Input and Output): Remove reference
+	to RWLock class.
+
 2011-12-23  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	* testsuite/tr1/2_general_utilities/shared_ptr/cons/

libstdc++-v3/doc/xml/manual/extensions.xml

@@ -475,14 +475,7 @@ get_temporary_buffer(5, (int*)0);
 	 descriptor, and provides the <code>fd()</code> function.
      </para></listitem>
    </itemizedlist>
-   <para>If you want to access a <code>filebuf</code>'s file descriptor to
-      implement file locking (e.g. using the <code>fcntl()</code> system
-      call) then you might be interested in Henry Suter's RWLock class.
-      <!-- url="http://suter.home.cern.ch/suter/RWLock.html" -->
-   </para>
 
-    <para>
-    </para>
   </section>
 </chapter>