Update piglit link to the current Piglit website.
Add note about updating patchwork when sending patch revisions.
Acked-by: Matt Turner <mattst88@gmail.com>
<p>
Whenever possible and applicable, test the patch with
-<a href="http://people.freedesktop.org/~nh/piglit/">Piglit</a> to
+<a href="http://piglit.freedesktop.org">Piglit</a> to
check for regressions.
</p>
it harder for reviewers to accidentally review old patches.
</p>
+<p>
+When submitting follow-up patches you should also login to
+<a href="https://patchwork.freedesktop.org">patchwork</a> and change the
+state of your old patches to Superseded.
+</p>
+
<h3>Reviewing Patches</h3>
<p>