Rework on Enum PAD_SHAPE_T, PAD_DRILL_SHAPE_T and PAD_ATTR_T (see rev 6008) : the new and better names are now used in Kicad code and existing python scripts.

PAD_SHAPE_T  and PAD_ATTR_T still have a double definition (new names and old names) to be sure python scripts are nor broken by the change.
 PAD_DRILL_SHAPE_T does not  have a double definition, because it is unlikely oblong holes are used in python scripts.
Double definitions will be removed in the (next) future.

pcbnew/plot_board_layers.cpp

@@ -370,16 +370,16 @@ void PlotStandardLayer( BOARD *aBoard, PLOTTER* aPlotter,
             pad->SetSize( padPlotsSize );
             switch( pad->GetShape() )
             {
-            case PAD_CIRCLE:
-            case PAD_OVAL:
+            case PAD_SHAPE_CIRCLE:
+            case PAD_SHAPE_OVAL:
                 if( aPlotOpt.GetSkipPlotNPTH_Pads() &&
                     (pad->GetSize() == pad->GetDrillSize()) &&
-                    (pad->GetAttribute() == PAD_HOLE_NOT_PLATED) )
+                    (pad->GetAttribute() == PAD_ATTRIB_HOLE_NOT_PLATED) )
                     break;
 
                 // Fall through:
-            case PAD_TRAPEZOID:
-            case PAD_RECT:
+            case PAD_SHAPE_TRAPEZOID:
+            case PAD_SHAPE_RECT:
             default:
                 itemplotter.PlotPad( pad, color, plotMode );
                 break;