Temporarily switch to double-precision library name until this single-double configuration issue is solved.
Temporarily switch to double-precision library name until this single-double
configuration issue is solved.

svn path=/trunk/; revision=3269

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