plimageslow():    Change arguments and related ops. from PLFLT to short.    Detect if called because of a replot. Change grimage() args. from PLINT to short. plimage():    Save only image matrix within bounds defined by Dxmin, ...    Correct size of x/y arrays, so as to plot all image pixels       (previously the right/botton column/row was not plotted.
plimageslow():
   Change arguments and related ops. from PLFLT to short.
   Detect if called because of a replot.
Change grimage() args. from PLINT to short.
plimage():
   Save only image matrix within bounds defined by Dxmin, ...
   Correct size of x/y arrays, so as to plot all image pixels
      (previously the right/botton column/row was not plotted.

svn path=/trunk/; revision=3580

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot