[CM] gnuplot support

[andersvi@extern.uio.no]

Great!

If the gnuplot-window doesnt stay up, try adding "-persist" to the
command-line:

        (defparameter *gnuplot* "gnuplot -persist")

-anders

>>>>> "RT" == Rick Taube <taube@uiuc.edu> writes:

    RT> CVS head now has new Gnuplot support for plotting data sets
    RT> and output from musical processes. See new dictionary entry
    RT> for overview and examples:

    RT> 	http://commonmusic.sf.net/doc/dict/gnuplot-fn.html