Change plimage to c_plimage in pragma statement. plimage is part of  the common api. Fixes link error with ada examples on Ubuntu.
Change plimage to c_plimage in pragma statement. plimage is part of 
the common api. Fixes link error with ada examples on Ubuntu.


svn path=/trunk/; revision=8370

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