Update draft release notes to 1.8.5 for the first half of the fourth batch

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

Documentation/RelNotes/1.8.5.txt

@@ -48,6 +48,10 @@ Updates since v1.8.4
 
 Foreign interfaces, subsystems and ports.
 
+ * On MacOS X, we detected if the filesystem needs the "pre-composed
+   unicode strings" workaround, but did not automatically enable it.
+   Now we do.
+
  * remote-hg remote helper misbehaved when interacting with a local Hg
    repository relative to the home directory, e.g. "clone hg::~/there".
 
@@ -63,6 +67,12 @@ Foreign interfaces, subsystems and ports.
 
 UI, Workflows & Features
 
+ * Earlier we started rejecting an attempt to add 0{40} object name to
+   the index and to tree objects, but it sometimes is necessary to
+   allow so to be able to use tools like filter-branch to correct such
+   broken tree objects.  "filter-branch" can again be used to to do
+   so.
+
  * "git config" did not provide a way to set or access numbers larger
    than a native "int" on the platform; it now provides 64-bit signed
    integers on all platforms.
@@ -155,6 +165,18 @@ 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).
 
+ * When an object is not found after checking the packfiles and then
+   loose object directory, read_sha1_file() re-checks the packfiles to
+   prevent racing with a concurrent repacker; teach the same logic to
+   has_sha1_file().
+   (merge 45e8a74 jk/has-sha1-file-retry-packed later to maint).
+
+ * "git commit --author=$name", when $name is not in the canonical
+   "A. U. Thor <au.thor@example.xz>" format, looks for a matching name
+   from existing history, but did not consult mailmap to grab the
+   preferred author name.
+   (merge ea16794 ap/commit-author-mailmap later to maint).
+
  * "git ls-files -k" needs to crawl only the part of the working tree
    that may overlap the paths in the index to find killed files, but
    shared code with the logic to find all the untracked files, which