Include directories are implied by legacy_gal linkage

This avoids having to manually specify include/legacy_gal
in and legacy GAL targets, and harominizes with legacy_wx.

This also means .cpp files in common/legacy_gal do not
need to specify the legacy_gal subdirectory, so they
will continue to work as needed when legacy_wx is removed.

common/CMakeLists.txt

@@ -88,6 +88,7 @@ add_library( legacy_gal STATIC ${LEGACY_GAL_SRCS} )
 add_library( legacy_wx STATIC ${LEGACY_WX_SRCS} )
 
 target_include_directories( legacy_wx PUBLIC ../include/legacy_wx )
+target_include_directories( legacy_gal PUBLIC ../include/legacy_gal )
 
 target_link_libraries( gal
     ${GLEW_LIBRARIES}

common/legacy_gal/block.cpp

@@ -34,7 +34,7 @@
 #include <macros.h>
 #include <base_struct.h>
 #include <base_screen.h>
-#include <legacy_gal/class_drawpanel.h>
+#include <class_drawpanel.h>
 #include <confirm.h>
 #include <block_commande.h>
 

common/legacy_gal/eda_draw_frame.cpp

@@ -35,7 +35,7 @@
 #include <bitmaps.h>
 #include <macros.h>
 #include <id.h>
-#include <legacy_gal/class_drawpanel.h>
+#include <class_drawpanel.h>
 #include <base_screen.h>
 #include <msgpanel.h>
 #include <draw_frame.h>

common/legacy_gal/other.cpp

@@ -3,7 +3,7 @@
 #include "base_screen.h"
 #include "common.h"
 #include "macros.h"
-#include "legacy_gal/class_drawpanel.h"
+#include "class_drawpanel.h"
 #include "marker_base.h"
 #include "dialog_display_info_HTML_base.h"
 
@@ -12,5 +12,4 @@
 void MARKER_BASE::DrawMarker( EDA_DRAW_PANEL* aPanel, wxDC* aDC, GR_DRAWMODE aDrawMode,
                               const wxPoint& aOffset )
 {
-   
 }

eeschema/CMakeLists.txt

@@ -20,7 +20,6 @@ endif()
 
 include_directories( BEFORE ${INC_BEFORE} )
 include_directories(
-    ../include/legacy_gal
     ./dialogs
     ./netlist_exporters
     ./widgets