Get rid of trailing whitespace on the list of executables that was screwing up the make.
Get rid of trailing whitespace on the list of executables that was screwing
up the make.

svn path=/trunk/; revision=5087

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