Added HandlerSocket plugin

- Fixed compiler errors
- Modified Makefiles to be part of plugin directory
- Some minor changes in database.cpp to use the new MariaDB handler interface

plugin/handler_socket/libhsclient/fatal.hpp

@@ -0,0 +1,22 @@
+
+// vim:sw=2:ai
+
+/*
+ * Copyright (C) 2010 DeNA Co.,Ltd.. All rights reserved.
+ * See COPYRIGHT.txt for details.
+ */
+
+#ifndef DENA_FATAL_HPP
+#define DENA_FATAL_HPP
+
+#include <string>
+
+namespace dena {
+
+void fatal_exit(const std::string& message);
+void fatal_abort(const std::string& message);
+
+};
+
+#endif
+