Update notes for submitted changes

* BlameGenerator: Annotate #getRenameDetector as Nullable

18/34421a7ffd003feb940970b2ade929a41cc965

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+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: Hudson CI
+Submitted-by: David Pursehouse <david.pursehouse@gmail.com>
+Submitted-at: Thu, 09 Feb 2017 18:56:45 -0500
+Reviewed-on: https://git.eclipse.org/r/89923
+Project: jgit/jgit
+Branch: refs/heads/master