Fixed broken plP_setpxl and plP_setphy function calls.
Fixed broken plP_setpxl and plP_setphy function calls.

svn path=/trunk/; revision=1730

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