CBD-1400:  comment out S3 commands, using DOS "rem" instead of "#"

Change-Id: I0c352407e676f73debe8ea12833e74c64963dc4e
Reviewed-on: http://review.couchbase.org/39274
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>