Update notes for submitted changes

* RepoCommand: generate relative submodule URLs from absolute URLs.
* RepoCommand: don't record new commit if tree did not change
* RepoCommand: persist unreadable submodules in .gitmodules

32/14171decf596f003c154685638b01faba31ff3

@@ -0,0 +1,9 @@
+Verified+1: Hudson CI
+Code-Review+1: Han-Wen NIenhuys <hanwen@google.com>
+Code-Review+1: David Pursehouse <david.pursehouse@gmail.com>
+Code-Review+2: Jonathan Nieder <jrn@google.com>
+Submitted-by: David Pursehouse <david.pursehouse@gmail.com>
+Submitted-at: Thu, 22 Feb 2018 00:37:48 -0500
+Reviewed-on: https://git.eclipse.org/r/117387
+Project: jgit/jgit
+Branch: refs/heads/master

44/6a7096ef01c0e3bb56736403d91b125b2ee6ba

@@ -0,0 +1,9 @@
+Verified+1: Hudson CI
+Code-Review+1: Han-Wen NIenhuys <hanwen@google.com>
+Code-Review+1: David Pursehouse <david.pursehouse@gmail.com>
+Code-Review+2: Jonathan Nieder <jrn@google.com>
+Submitted-by: David Pursehouse <david.pursehouse@gmail.com>
+Submitted-at: Thu, 22 Feb 2018 00:37:48 -0500
+Reviewed-on: https://git.eclipse.org/r/117386
+Project: jgit/jgit
+Branch: refs/heads/master

6a/420613f7dae0f58496e259859d1a6cf1965f5b

@@ -0,0 +1,7 @@
+Code-Review+2: Jonathan Nieder <jrn@google.com>
+Verified+1: David Pursehouse <david.pursehouse@gmail.com>
+Submitted-by: David Pursehouse <david.pursehouse@gmail.com>
+Submitted-at: Thu, 22 Feb 2018 00:37:48 -0500
+Reviewed-on: https://git.eclipse.org/r/117688
+Project: jgit/jgit
+Branch: refs/heads/master