gnuplot does not draw all histogram titles

Issue

• Scripts which used to work with gnuplot 4.0 now generate histograms that are missing some of their item titles. In this case, the issue is not restricted to histograms as it is the set size directive that determines image/canvas size which causes items to be missing. This was noticed when creating a histogarm with many different items, for which it included titles for 17 of the items but then the remaining were missing (cut off).