Merge branch 'ds/repack-fixlets'

Two fixes around "git repack".

* ds/repack-fixlets:
  repack: make '--quiet' disable progress
  repack: respect kept objects with '--write-midx -b'

Documentation/git-repack.txt

@@ -76,8 +76,9 @@ to the new separate pack will be written.
 	linkgit:git-pack-objects[1].
 
 -q::
-	Pass the `-q` option to 'git pack-objects'. See
-	linkgit:git-pack-objects[1].
+--quiet::
+	Show no progress over the standard error stream and pass the `-q`
+	option to 'git pack-objects'. See linkgit:git-pack-objects[1].
 
 -n::
 	Do not update the server information with