Don't include plotters_specific.h where not needed

This avoids some very large rebuilds when a plotter class is changed.

pcbnew/dialogs/dialog_export_svg.cpp

@@ -37,6 +37,7 @@
 #include <wx_html_report_panel.h>
 #include <bitmaps.h>
 #include <widgets/unit_binder.h>
+#include <plotters/plotters_pslike.h>
 
 class DIALOG_EXPORT_SVG : public DIALOG_EXPORT_SVG_BASE
 {

pcbnew/exporters/gen_drill_report_files.cpp

@@ -28,6 +28,7 @@
  */
 
 #include <plotter.h>
+#include <plotters_specific.h>
 #include <eda_item.h>
 #include <gr_text.h>
 #include <confirm.h>

pcbnew/exporters/gendrill_gerber_writer.cpp

@@ -30,6 +30,7 @@
 #include <vector>
 
 #include <plotter.h>
+#include <plotters_specific.h>
 #include <kicad_string.h>
 #include <locale_io.h>
 #include <pcb_edit_frame.h>

pcbnew/exporters/gerber_placefile_writer.cpp

@@ -28,6 +28,7 @@
 #include <vector>
 
 #include <plotter.h>
+#include <plotters_specific.h>
 #include <kicad_string.h>
 #include <locale_io.h>
 #include <pcb_edit_frame.h>

pcbnew/pcb_plot_params.h

@@ -25,7 +25,7 @@
 
 #include <wx/wx.h>
 #include <outline_mode.h>
-#include <plotters_specific.h>
+#include <plotter.h>
 #include <layers_id_colors_and_visibility.h>
 
 class COLOR_SETTINGS;

pcbnew/plot_board_layers.cpp

@@ -47,6 +47,7 @@
 #include <dimension.h>
 
 #include <pcbplot.h>
+#include <plotters_specific.h>
 #include <pcb_painter.h>
 #include <gbr_metadata.h>
 

pcbnew/plot_brditems_plotter.cpp

@@ -38,6 +38,7 @@
 #include <math/util.h>                        // for KiROUND, Clamp
 #include <math/vector2d.h>                    // for VECTOR2I
 #include <plotter.h>
+#include <plotters_specific.h>
 #include <trigo.h>
 
 #include <board_design_settings.h>            // for BOARD_DESIGN_SETTINGS