Update draft release notes to 1.8.5

Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/RelNotes/1.8.5.txt

@@ -201,6 +201,8 @@ UI, Workflows & Features
 
 Performance, Internal Implementation, etc.
 
+ * "git repack" is now written in C.
+
  * Build procedure for MSVC has been updated.
 
  * If a build-time fallback is set to "cat" instead of "less", we
@@ -236,6 +238,11 @@ Unless otherwise noted, all the fixes since v1.8.4 in the maintenance
 track are contained in this release (see release notes to them for
 details).
 
+ * "git clone" gave some progress messages to the standard output, not
+   to the standard error, and did not allow suppressing them with the
+   --no-progress option.
+   (merge 643f918 jk/clone-progress-to-stderr later to maint).
+
  * "format-patch --from=<whom>" forgot to omit unnecessary in-body
    from line, i.e. when <whom> is the same as the real author.
    (merge 662cc30 jk/format-patch-from later to maint).