libhydra: Move kernel interface to libcharon

This moves hydra->kernel_interface to charon->kernel.

src/libcharon/kernel/kernel_ipsec.c

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2008 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
+ * 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.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ */
+
+#include "kernel_ipsec.h"
+
+#include <daemon.h>
+
+/**
+ * See header
+ */
+bool kernel_ipsec_register(plugin_t *plugin, plugin_feature_t *feature,
+						   bool reg, void *data)
+{
+	if (reg)
+	{
+		return charon->kernel->add_ipsec_interface(charon->kernel,
+											(kernel_ipsec_constructor_t)data);
+	}
+	else
+	{
+		return charon->kernel->remove_ipsec_interface(charon->kernel,
+											(kernel_ipsec_constructor_t)data);
+	}
+}