Update draft release notes for 1.5.1

Signed-off-by: Junio C Hamano <junkio@cox.net>

Documentation/RelNotes-1.5.1.txt

@@ -19,21 +19,26 @@ Updates since v1.5.0
   - "git diff" learned --ignore-space-at-eol.  This is a weaker
     form of --ignore-space-change.
 
+  - "git name-rev" learned --refs=<pattern>, to limit the tags
+    used for naming the given revisions only to the ones
+    matching the given pattern.
+
 * Updated behaviour of existing commands.
 
- - "git diff" outputs a trailing HT when pathnames have embedded
-   SP on +++/--- header lines, in order to help "GNU patch" to
-   parse its output.  "git apply" was already updated to accept
-   this modified output format since ce74618d (Sep 22, 2006).
+  - "git diff" outputs a trailing HT when pathnames have embedded
+    SP on +++/--- header lines, in order to help "GNU patch" to
+    parse its output.  "git apply" was already updated to accept
+    this modified output format since ce74618d (Sep 22, 2006).
 
 * Hooks
 
- - The sample update hook to show how to send out notification
-   e-mail was updated to show only new commits that appeared in
-   the repository.  Earlier, it showed new commits that appeared
-   on the branch.
+  - The sample update hook to show how to send out notification
+    e-mail was updated to show only new commits that appeared in
+    the repository.  Earlier, it showed new commits that appeared
+    on the branch.
 
 --
-O=v1.5.0-20-ga44a0c9
+exec >/var/tmp/1
+O=v1.5.0-49-g69bc0e2
 echo O=`git describe master`
-git shortlog --no-merges $O..
+git shortlog --no-merges $O..master ^maint