Update notes for submitted changes

* RefTree: Change peel suffix to " ^" (space carrot)
* FileRepository: Support extensions.refsBackendType = RefTree
* RefTreeDatabase: Ref database using refs/txn/committed

08/8c2fc6e33737a406e69a99d75f06d3fbb05e30

@@ -0,0 +1,7 @@
+Code-Review+2: Terry Parker <tparker@google.com>
+Verified+1: Hudson CI
+Submitted-by: Shawn Pearce <spearce@spearce.org>
+Submitted-at: Mon, 11 Jan 2016 19:01:03 -0500
+Reviewed-on: https://git.eclipse.org/r/62970
+Project: jgit/jgit
+Branch: refs/heads/master

39/8d8e877f91216e287a7a569ea758062dd7c521

@@ -0,0 +1,7 @@
+Verified+1: Hudson CI
+Code-Review+2: Shawn Pearce <spearce@spearce.org>
+Submitted-by: Shawn Pearce <spearce@spearce.org>
+Submitted-at: Mon, 11 Jan 2016 19:01:00 -0500
+Reviewed-on: https://git.eclipse.org/r/63926
+Project: jgit/jgit
+Branch: refs/heads/master

48/e245fc606f7033b9de017d3dcae7b8ea7cc91a

@@ -0,0 +1,7 @@
+Verified+1: Hudson CI
+Code-Review+2: Shawn Pearce <spearce@spearce.org>
+Submitted-by: Shawn Pearce <spearce@spearce.org>
+Submitted-at: Mon, 11 Jan 2016 19:01:05 -0500
+Reviewed-on: https://git.eclipse.org/r/62969
+Project: jgit/jgit
+Branch: refs/heads/master