Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/ApacheConnector/include/ApacheChannel.h

@@ -0,0 +1,30 @@
+//
+// ApacheChannel.h
+//
+// Copyright (c) 2006-2011, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef ApacheConnector_ApacheChannel_INCLUDED
+#define ApacheConnector_ApacheChannel_INCLUDED
+
+
+#include "Poco/Channel.h"
+
+
+class ApacheChannel: public Poco::Channel
+	/// This class implements a logging channel
+	/// that uses the Apache logging facilities.
+{
+public:
+	ApacheChannel();
+	~ApacheChannel();
+
+	void log(const Poco::Message& msg);
+};
+
+
+#endif // ApacheConnector_ApacheChannel_INCLUDED