Commit after running correlator with tcp data streams.
 	new file:   AARTFAAC.parset.tcp
      Modified parset to use with raw data being fed to ION processes over tcp,
      rather than from files.
	new file:   gentcpparset.sh
	  Script to generate the relevant portions of the modified parset.
      Run as ./gentcpparset >> AARTFAAC.parset, then edit parset by hand.
	modified:   run.AARTFAAC.jds
      Now ignores gpu machines, if allocated.
	new file:   send_r815_tcp.sh
	  Script to send raw data from the data store to the machine running ION processes.

   Comment:
	  - A single ION process is fired per 'station', or dipole raw data file.
      - Each compute node gets data from all 288 ION processes, in time multiplexed
        order.
	  - The CN_Procs on the compute nodes, and the ION_Procs on r815 establish
		TCP connections to each other by negotiating random port numbers written
        to the shared /home area.
	  - In case of raw data being sent over TCP:
           After reading the parset, the ION processes bind on the ports specified
		in the parset. There is a timeout, so the udp-copies on the data side
	    should be started within it, else the ION processes crash with a timeout
        error.