Deprecate export to KML files

Related to #3983, see discussion there for the rationale.

deprecated/KmlRideFile.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2010 Mark Liversedge (liversedge@gmail.com)
+ *
+ * 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, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _KmlRideFile_h
+#define _KmlRideFile_h
+#include "GoldenCheetah.h"
+
+#include "RideFile.h"
+
+struct KmlFileReader : public RideFileReader {
+    virtual RideFile *openRideFile(QFile &, QStringList &errors, QList<RideFile*>* =0) const {
+        errors << QString("kml files are not supported for import"); // does not support reading
+        return NULL;
+    }
+    bool writeRideFile(Context *, const RideFile *ride, QFile &file) const;
+    bool hasWrite() const { return true; }
+};
+
+#endif // _KmlRideFile_h