tests/network-clock.scm (plot-simulation): Pipe data to the elite python skript.

tests/network-clock.scm (plot-simulation): Pipe data to the elite python skript.

Original commit message from CVS:
2005-06-23  Andy Wingo  <wingo@pobox.com>

* tests/network-clock.scm (plot-simulation): Pipe data to the
elite python skript.

* tests/network-clock-utils.scm (define-parameter): New macro,
defines a parameter that can be set via the command line.
(set-parameter!, parse-parameter-arguments): Command line args
parser.

* tests/plot-data: Simple matplotlib-based plotter, takes input on
stdin.