Add license information to PolyLine.h and PolyLine.cpp files.

polygon/PolyLine.cpp

-// PolyLine.cpp ... implementation of CPolyLine class from FreePCB.
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Few parts of this code come from FreePCB, released under the GNU General Public License V2.
+ * (see http://www.freepcb.com/ )
+ *
+ * Copyright (C) 2012-2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
+ * Copyright (C) 2012-2014 KiCad Developers, see CHANGELOG.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 PolyLine.cpp
+ * @note implementation of CPolyLine class
+ */
 
 //
 // implementation for kicad, using clipper polygon clipping library

polygon/PolyLine.h

-// PolyLine.h ... definition of CPolyLine class
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Few parts of this code come from  FreePCB, released under the GNU General Public License V2.
+ * (see http://www.freepcb.com/ )
+ *
+ * Copyright (C) 2012-2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
+ * Copyright (C) 2012-2014 KiCad Developers, see CHANGELOG.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 PolyLine.h
+ * @note definition of CPolyLine class
+ */
 
 //
 // A polyline contains one or more contours, where each contour