Update notes for submitted changes

* Document the show methods of RevWalkTextBuiltin

eb/8431da757f44e9175716b4c1b08548043463a8

+Code-Review+2: Robin Rosenberg <robin.rosenberg@dewire.com>
+IP-Clean+1: Robin Rosenberg <robin.rosenberg@dewire.com>
+Verified+1: Robin Rosenberg <robin.rosenberg@dewire.com>
+Verified+1: Hudson CI
+Submitted-by: Robin Rosenberg <robin.rosenberg@dewire.com>
+Submitted-at: Thu, 22 Sep 2011 12:27:48 -0400
+Reviewed-on: http://egit.eclipse.org/r/4264
+Project: jgit
+Branch: refs/heads/master