[PATCH] wwwdocs: Add note to changes.html for __has_{feature,extension}

[Alex Coplan]

Hi,

This adds a note to the GCC 14 release notes mentioning support for
__has_{feature,extension} (PR60512).

OK to commit?

Thanks,
Alex

diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html
index 9fd224c1..facead8d 100644
--- a/htdocs/gcc-14/changes.html
+++ b/htdocs/gcc-14/changes.html
@@ -242,6 +242,12 @@ a work-in-progress.</p>
       <code>constinit</code> and optimized dynamic initialization</li>
     </ul>
   </li>
+  <li>The Clang language extensions <code>__has_feature</code> and
+    <code>__has_extension</code> have been implemented in GCC.  These
+    are available from C, C++, and Objective-C(++).
+    This is primarily intended to aid the portability of code written
+    against Clang.
+  </li>
 </ul>
 
 <h4 id="libstdcxx">Runtime Library (libstdc++)</h4>