Third batch

A couple of brown-paper-bag fixes, plus the other "The branch
'master' no longer is special" fix.

Now we are ready to rewind 'next'.

Documentation/RelNotes/2.29.0.txt

@@ -11,6 +11,10 @@ UI, Workflows & Features
 
  * "git for-each-ref --format=<>" learned %(contents:size).
 
+ * "git merge" learned to selectively omit " into <branch>" at the end
+   of the title of default merge message with merge.suppressDest
+   configuration.
+
 
 Performance, Internal Implementation, Development Support etc.