Roll version of gsutil to 4.15.

third_party/gsutil/gslib/commands/acl.py

 # -*- coding: utf-8 -*-
 # Copyright 2011 Google Inc. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
@@ skipping 78 matching lines @@
 
     gsutil acl set acl.txt gs://bucket/*.jpg
 
   If you have a large number of ACLs to update you might want to use the
   gsutil -m option, to perform a parallel (multi-threaded/multi-processing)
   update:
 
     gsutil -m acl set acl.txt gs://bucket/*.jpg
 
   Note that multi-threading/multi-processing is only done when the named URLs
-  refer to objects. gsutil -m acl set gs://bucket1 gs://bucket2 will run the
-  acl set operations sequentially.
+  refer to objects, which happens either if you name specific objects or 
+  if you enumerate objects by using an object wildcard or specifying
+  the acl -r flag.
 
 
 <B>SET OPTIONS</B>
   The "set" sub-command has the following options
 
     -R, -r      Performs "acl set" request recursively, to all objects under
                 the specified URL.
 
     -a          Performs "acl set" request on all object versions.
 
@@ skipping 353 matching lines @@
     elif action_subcommand == 'set':
       self._SetAcl()
     elif action_subcommand in ('ch', 'change'):
       self._ChAcl()
     else:
       raise CommandException(('Invalid subcommand "%s" for the %s command.\n'
                               'See "gsutil help acl".') %
                              (action_subcommand, self.command_name))
 
     return 0