Updates to draft release notes to 1.6.4

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

Documentation/RelNotes-1.6.4.txt

@@ -22,13 +22,6 @@ branch pointed at by its HEAD, gets a large warning.  You can choose what
 should happen upon such a push by setting the configuration variable
 receive.denyDeleteCurrent in the receiving repository.
 
-When the user does not tell "git push" what to push, it has always
-pushed matching refs.  For some people it is unexpected, and a new
-configuration variable push.default has been introduced to allow
-changing a different default behaviour.  To advertise the new feature,
-a big warning is issued if this is not configured and a git push without
-arguments is attempted.
-
 
 Updates since v1.6.3
 --------------------
@@ -38,26 +31,60 @@ Updates since v1.6.3
  * gitweb Perl style clean-up.
 
  * git-svn updates, including a new --authors-prog option to map author
-   names by invoking an external program.
+   names by invoking an external program, 'git svn reset' to unwind
+   'git svn fetch', support for more than one branches, etc.
 
 (portability)
 
  * We feed iconv with "UTF-8" instead of "utf8"; the former is
-   understood more widely.
+   understood more widely.  Similarly updated test scripts to use
+   encoding names more widely understood (e.g. use "ISO8850-1" instead
+   of "ISO-8859-1").
+
+ * Various portability fixes/workarounds for different vintages of
+   SunOS, IRIX, and Windows.
+
+ * Git-over-ssh transport on Windows supports PuTTY plink and TortoisePlink.
 
 (performance)
 
+ * Many repeated use of lstat() are optimized out in "checkout" codepath.
+
+ * git-status (and underlying git-diff-index --cached) are optimized
+   to take advantage of cache-tree information in the index.
+
 (usability, bells and whistles)
 
  * "git add --edit" lets users edit the whole patch text to fine-tune what
    is added to the index.
 
+ * "git am" accepts StGIT series file as its input.
+
+ * "git bisect skip" skips to a more randomly chosen place in the hope
+   to avoid testing a commit that is too close to a commit that is
+   already known to be untestable.
+
+ * "git cvsexportcommit" learned -k option to stop CVS keywords expansion
+
+ * "git grep" learned -p option to show the location of the match using the
+   same context hunk marker "git diff" uses.
+
+ * https transport can optionally be told that the used client
+   certificate is password protected, in which case it asks the
+   password only once.
+
+ * "git imap-send" is IPv6 aware.
+
  * "git log --graph" draws graphs more compactly by using horizonal lines
    when able.
 
  * "git log --decorate" shows shorter refnames by stripping well-known
    refs/* prefix.
 
+ * "git push $name" honors remote.$name.pushurl if present before
+   using remote.$name.url.  In other words, the URL used for fetching
+   and pushing can be different.
+
  * "git send-email" understands quoted aliases in .mailrc files (might
    have to be backported to 1.6.3.X).
 
@@ -69,6 +96,11 @@ Updates since v1.6.3
  * "add" and "update" subcommands to "git submodule" learned --reference
    option to use local clone with references.
 
+ * "git submodule update" learned --rebase option to update checked
+   out submodules by rebasing the local changes.
+
+ * "gitweb" can optionally use gravatar to adorn author/committer names.
+
 (developers)
 
  * A major part of the "git bisect" wrapper has moved to C.
@@ -82,6 +114,11 @@ release, unless otherwise noted.
 Here are fixes that this release has, but have not been backported to
 v1.6.3.X series.
 
+ * "git diff-tree -r -t" used to omit new or removed directories from
+   the output.  df533f3 (diff-tree -r -t: include added/removed
+   directories in the output, 2009-06-13) may need to be cherry-picked
+   to backport this fix.
+
  * The way Git.pm sets up a Repository object was not friendly to callers
    that chdir around.  It now internally records the repository location
    as an absolute path when autodetected.
@@ -89,5 +126,5 @@ v1.6.3.X series.
 ---
 exec >/var/tmp/1
 echo O=$(git describe master)
-O=v1.6.3.1-168-g23807fa
+O=v1.6.4-rc1-7-gbba0fd2
 git shortlog --no-merges $O..master ^maint