Sync with 2.8.3

* maint:
  Git 2.8.3

Documentation/RelNotes/2.8.3.txt

@@ -67,4 +67,35 @@ Fixes since v2.8.2
    recurses into, but this was incorrect when the command was not run
    from the root level of the superproject.
 
+ * The test scripts for "git p4" (but not "git p4" implementation
+   itself) has been updated so that they would work even on a system
+   where the installed version of Python is python 3.
+
+ * The "user.useConfigOnly" configuration variable makes it an error
+   if users do not explicitly set user.name and user.email.  However,
+   its check was not done early enough and allowed another error to
+   trigger, reporting that the default value we guessed from the
+   system setting was unusable.  This was a suboptimal end-user
+   experience as we want the users to set user.name/user.email without
+   relying on the auto-detection at all.
+
+ * "git mv old new" did not adjust the path for a submodule that lives
+   as a subdirectory inside old/ directory correctly.
+
+ * "git push" from a corrupt repository that attempts to push a large
+   number of refs deadlocked; the thread to relay rejection notices
+   for these ref updates blocked on writing them to the main thread,
+   after the main thread at the receiving end notices that the push
+   failed and decides not to read these notices and return a failure.
+
+ * A question by "git send-email" to ask the identity of the sender
+   has been updated.
+
+ * Recent update to Git LFS broke "git p4" by changing the output from
+   its "lfs pointer" subcommand.
+
+ * Some multi-byte encoding can have a backslash byte as a later part
+   of one letter, which would confuse "highlight" filter used in
+   gitweb.
+
 Also contains minor documentation updates and code clean-ups.

Documentation/git.txt

@@ -43,11 +43,12 @@ unreleased) version of Git, that is available from the 'master'
 branch of the `git.git` repository.
 Documentation for older releases are available here:
 
-* link:v2.8.2/git.html[documentation for release 2.8.2]
+* link:v2.8.3/git.html[documentation for release 2.8.3]
 
 * release notes for
-  link:RelNotes/2.8.2.txt[2.8.2].
-  link:RelNotes/2.8.1.txt[2.8.1].
+  link:RelNotes/2.8.3.txt[2.8.3],
+  link:RelNotes/2.8.2.txt[2.8.2],
+  link:RelNotes/2.8.1.txt[2.8.1],
   link:RelNotes/2.8.0.txt[2.8].
 
 * link:v2.7.3/git.html[documentation for release 2.7.3]