Implemented x11 example with plot3d temporarily replacing mesh until that API is completed.
Implemented x11 example with plot3d temporarily replacing mesh until that
API is completed.

svn path=/trunk/; revision=3262

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