Update notes for submitted changes

* Change RacyGitTests to create a racy git situation in a stable way
* Deprecate Constants.CHARACTER_ENCODING in favor of StandardCharsets.UTF_8
* Fix non-deterministic hash of archives created by ArchiveCommand
* Update Maven plugins ecj, plexus, error-prone

93/87288a8612eb9e9478c5ecfe4b1351a0ed4717

@@ -0,0 +1,9 @@
+Code-Review+1: David Ostrovsky <d.ostrovsky@gmx.de>
+Code-Review+1: David Pursehouse <david.pursehouse@gmail.com>
+Verified+1: CI Bot
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 19 Jun 2019 15:45:36 -0400
+Reviewed-on: https://git.eclipse.org/r/144172
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1

c3/66f6483925f19670dae72c6b775911772f1ae6

@@ -0,0 +1,7 @@
+Verified+1: CI Bot
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 19 Jun 2019 15:45:36 -0400
+Reviewed-on: https://git.eclipse.org/r/144415
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1

df/637928d2ef4b9ee06af7e37344c7848f870ce4

@@ -0,0 +1,8 @@
+Verified+1: CI Bot
+Code-Review+1: Masaya Suzuki <draftcode@gmail.com>
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 19 Jun 2019 15:45:36 -0400
+Reviewed-on: https://git.eclipse.org/r/144339
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1

f1/8b5010fcf750e6949e53dca292db9f2b4dc57d

@@ -0,0 +1,7 @@
+Code-Review+2: David Pursehouse <david.pursehouse@gmail.com>
+Verified+1: CI Bot
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 19 Jun 2019 15:45:36 -0400
+Reviewed-on: https://git.eclipse.org/r/144335
+Project: jgit/jgit
+Branch: refs/heads/stable-5.1