console.py's example: stop reactor on ctrl-d

darcs-hash:20081107091705-b2873-d29abb3e214881c7b4e3f2bf6426ffd7ae678d25
consolebuffer.py: support for logging network traffic in write

darcs-hash:20081107091735-b2873-5a2b952a11932abf056e094e120be2932bdf8b2b