APIs for passing KIFONT::FONT pointers around.

Also some clean-up and bug fixes.

common/plotters/common_plot_functions.cpp

@@ -120,7 +120,7 @@ void PlotDrawingSheet( PLOTTER* plotter, const PROJECT* aProject, const TITLE_BL
             plotter->Text( text->GetTextPos(), plotColor, text->GetShownText(),
                            text->GetTextAngle(), text->GetTextSize(), text->GetHorizJustify(),
                            text->GetVertJustify(), penWidth, text->IsItalic(), text->IsBold(),
-                           text->IsMultilineAllowed() );
+                           text->IsMultilineAllowed(), text->GetFont() );
         }
             break;