Corrected the parts with plimagefr. The example is complete, apart from  testing against x20c, checking the refreshing behaviour and plgetcursor
Corrected the parts with plimagefr. The example is complete, apart from 
testing against x20c, checking the refreshing behaviour and plgetcursor

svn path=/trunk/; revision=8726

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