Fix errors with plcalc_world and plgdidev tests. For plcalc_world the  values that were tested against were wrong. For plgdidev the  justifications are relative and have to be between -0.5 and 0.5. 
Fix errors with plcalc_world and plgdidev tests. For plcalc_world the 
values that were tested against were wrong. For plgdidev the 
justifications are relative and have to be between -0.5 and 0.5. 


svn path=/trunk/; revision=9162

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