Fix --with-c++ bug which was putting -lplcxxd (or -lplcxx) in the wrong place (on the end of the link command).  Instead, it is now put right after the -L option that refers to the plplot library area.  Because of the new order all references from within libplcxxd to functions in libplplotd are now resolved properly.
Fix --with-c++ bug which was putting -lplcxxd (or -lplcxx) in the wrong
place (on the end of the link command).  Instead, it is now put right after
the -L option that refers to the plplot library area.  Because of the new
order all references from within libplcxxd to functions in libplplotd are
now resolved properly.

svn path=/trunk/; revision=3561

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