Official notice of CMake version 2.6.0 (or higher) requirement. 
Official notice of CMake version 2.6.0 (or higher) requirement. 

svn path=/trunk/; revision=9377

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