Update notes for submitted changes

* Make output stream optional in DiffCommand

6e/bc477c0b6a209ec9bd1a8bcce796d04ca66966

@@ -0,0 +1,8 @@
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+IP-Clean+1: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 09 May 2012 18:20:01 -0400
+Reviewed-on: https://git.eclipse.org/r/5908
+Project: jgit/jgit
+Branch: refs/heads/master