Made the bomb-out for non-ANSI | non-C++ compilers more explicit.
Made the bomb-out for non-ANSI | non-C++ compilers more explicit.

svn path=/trunk/; revision=487

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