Moved the check on the minimum CMake version for MSYS to after the call to project(), as that seems to be the first moment in the build process that the variable is actually known.
Moved the check on the minimum CMake version for MSYS to after the call to project(), as that seems to be the first moment in the build process that the variable is actually known.

svn path=/trunk/; revision=9841

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