Fix packaging on windows

Change-Id: Iaed003dab6ea8e5bdb32ae085703ced41200bd2d
Reviewed-on: http://review.couchbase.org/24444
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Tested-by: Sergey Avseyev <sergey.avseyev@gmail.com>