As there is only one occurence of cerr in this file, use the std:: scope resolution operator instead of exposing all names of the standard namespace with "using".
As there is only one occurence of cerr in this file, use the std:: scope resolution operator instead of exposing all names of the standard namespace with "using".

svn path=/trunk/; revision=4743

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