docs: Remove GLw from the documentation except for a new FAQ entry.

Also remove an outdated reference to GLEW being in tree.

Reviewed-by: Brian Paul <brianp@vmware.com>
diff --git a/docs/faq.html b/docs/faq.html
index 071381c..bf6545f 100644
--- a/docs/faq.html
+++ b/docs/faq.html
@@ -204,8 +204,13 @@
 </a></p>
 
 
+<h2><a name="part2">2.4 Where is the GLw library?</a></h2>
+<p>
+<a name="part2">GLw (OpenGL widget library) is now available from a separate <a href="http://cgit.freedesktop.org/mesa/glw/">git repository</a>.  Unless you're using very old Xt/Motif applications with OpenGL, you shouldn't need it.
+</a></p>
 
-<h2><a name="part2">2.4 What's the proper place for the libraries and headers?</a></h2>
+
+<h2><a name="part2">2.5 What's the proper place for the libraries and headers?</a></h2>
 <p>
 <a name="part2">On Linux-based systems you'll want to follow the
 </a><a href="http://oss.sgi.com/projects/ogl-sample/ABI/index.html"