Add a libstdc++-4.4 patch for C++0x to the website.

llvm-svn: 128498
diff --git a/clang/www/cxx_status.html b/clang/www/cxx_status.html
index 6806978..ebb420e8 100644
--- a/clang/www/cxx_status.html
+++ b/clang/www/cxx_status.html
@@ -85,6 +85,11 @@
 ISO C++ standard (1998/2003). This section tracks the status of various C++0x
 features.</p>
 
+<p>You can use clang in C++0x mode either
+with <a href="http://libcxx.llvm.org/">libc++</a> or with gcc's libstdc++.
+libstdc++-4.4 requires <a href="libstdc++4.4-clang0x.patch">a patch</a> to work
+with clang; other versions have not been tested.</p>
+
 
 <h2 id="specification">Implementation Status by Feature</h2>