Fix build errors in layer mask changes.

include/layers_id_colors_and_visibility.h

+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2010 Jean-Pierre Charras, jp.charras at wanadoo.fr
+ * Copyright (C) 2007 KiCad Developers, see change_log.txt for contributors.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
 /**
  * @file layers_id_colors_and_visibility.h
- * @brief Classes and definitions used in Pcbnew.
+ * @brief Board layer functions and definitions.
  */
 
 #ifndef _LAYERS_ID_AND_VISIBILITY_H_
 #define _LAYERS_ID_AND_VISIBILITY_H_
 
+#include <wx/debug.h>            // wxASSERT
+
 /* Layer identification (layer number) */
 #define UNDEFINED_LAYER         -1
 #define FIRST_COPPER_LAYER      0

pcbnew/pcad2kicadpcb_plugin/pcb_callbacks.h

@@ -31,7 +31,7 @@
 #define PCB_CALLBACKS_H_
 
 #include <wx/wx.h>
-#include "include/layers_id_colors_and_visibility.h"
+#include <layers_id_colors_and_visibility.h>
 
 enum LAYER_TYPE_T
 {