Mark v5.17.9 as done in the release schedule

bingos · bingos · commit cddd601306c1 · 2013-02-23T11:36:51.000Z
diff --git a/Porting/release_schedule.pod b/Porting/release_schedule.pod
@@ -69,7 +69,7 @@ you should reset the version numbers to the next blead series.
   2012-11-20  5.17.6  ✓       Ricardo Signes
   2012-12-18  5.17.7  ✓       Dave Rolsky
   2013-01-20  5.17.8  ✓       Aaron Crane
-  2013-02-20  5.17.9          Chris Williams
+  2013-02-20  5.17.9  ✓       Chris Williams
   2013-03-20  5.17.10         Max Maischein
   2013-04-20  5.17.11
 
