hixie: document.readyState should be updated after csalling document.open(). (whatwg r5501)

hixie: document.readyState should be updated after csalling
document.open(). (whatwg r5501)

http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.4391&r2=1.4392&f=h
http://html5.org/tools/web-apps-tracker?from=5500&to=5501

===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.4391
retrieving revision 1.4392
diff -u -d -r1.4391 -r1.4392
--- Overview.html	25 Sep 2010 20:19:26 -0000	1.4391
+++ Overview.html	25 Sep 2010 20:45:54 -0000	1.4392
@@ -9938,6 +9938,9 @@
    an end-of-file token). The encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
    <i>irrelevant</i>.</li>
 
+   <li><p>Set the <a href="#current-document-readiness">current document readiness</a> of the
+   document to "loading".</li>
+
    <li>
 
     <!-- text/plain handling -->