Move entire check for CMake minimum version after the project file to accomodate MSYS needs.
Move entire check for CMake minimum version after the project file to
accomodate MSYS needs.

svn path=/trunk/; revision=9842

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