Module VisionEgg.DaqOverTCP

Implements data acquisition over TCP.

This module controls data acquisition hardware running on a (probably)
different computer. The data acquisition server must be implement the
behavior exhibited by the fake_daq_server.py script in the
demo/daq/tcp directory.  fake_daq_server.py emulates the mac OS
program MacDaq, available as a separate project from the Vision Egg
download site.  MacDaq uses MacAdios hardware to acquire data under
control of a network (TCP) connection.

Realtime acquisition and display of the sampled signal is not the goal
of this module. That is the task of the computer actually performing
the data acquisition (i.e. the MacDaq system). This module gets the
data after the acquisition has occurred.

This module has not been extensively tested or used, and should be
considered unstable.