Connect to a python daemon for replay parsing.

Example using port 54321:
  * Add python.port = :54321 to eros.cfg
  * Run python sc2json.py 54321 to listen on port 54321.
  * Start erosd

Tested in isolation but not with full running server process.
Improve sc2json.py logging and shutdown sequence.
Merge pull request #1 from Starbow/python_daemon

Python daemon