Added stubs for functions PLSDEV, PLSESC, and PLSSUB, and deleted stub for PLBEG.
Added stubs for functions PLSDEV, PLSESC, and PLSSUB, and deleted stub for
PLBEG.

svn path=/trunk/; revision=123

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