Collapsed plot and nplot into a single method, so it can further specialised,...

Commit by leighsmith :: r161 /trunk/ (nlisp-gnuplot.lisp nlisp.lisp nlisp.mbd): (link) Collapsed plot and nplot into a single method, so it can further specialised, plot now cantake lists or a single narray for y & x. Now uses a binary format for communicating withgnuplot, should be faster for big plots. The keywords are now as nplot and thereforeslightly incompatible with earlier plot calls, namely :label becomes :legends and musttake a list, ditto :styles. Made the temporary plot file directory moreplatform independent, with preliminary support for Windows and clisp, thanks to MirkoVukovic for prototyping. Updated mudballs definition file to be functional until thedistribution is verified.