Although x27c.c is not quite complete yet, it does work so add it to the installed examples which are compiled.
Although x27c.c is not quite complete yet, it does work so add it to the
installed examples which are compiled.

svn path=/trunk/; revision=7854

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