Fix for py3.4 for streaming writing to console.

Module [fabric-py3k]:
  * __init__.py
  * files.py
  * project.py
  * decorated_fabfile_with_modules.py
  * deep.py
  * default_tasks.py
  * nested_alias.py
  * nested_aliases.py
  * conf.py
  * __init__.py
  * docs.py
  * tag.py
  * utils.py
  * context_managers.py
  * decorators.py
  * docs.py
  * io.py
  * job_queue.py
  * main.py
  * network.py
  * operations.py
  * sftp.py
  * task_utils.py
  * tasks.py
  * test_operations.py
  * Python26SocketServer.py
  * server.py
  * tes2t_context_managers.py
  * tes2t_contrib.py
  * tes2t_decorators.py
  * tes2t_network.py
  * test_io.py
  * test_main.py
  * test_operations.py
  * test_parallel.py
  * test_server.py
  * test_tasks.py
  * test_utils.py
  * utils.py