Decrease size of overall viewport so there is room to display labelled and decorated colorbar.
Decrease size of overall viewport so there is room to display labelled
and decorated colorbar.

svn path=/trunk/; revision=11816

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