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/ApacheApplication.h

@@ -0,0 +1,56 @@
+//
+// ApacheApplication.h
+//
+// Copyright (c) 2006-2011, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef ApacheConnector_ApacheApplication_INCLUDED
+#define ApacheConnector_ApacheApplication_INCLUDED
+
+
+#include "ApacheRequestHandlerFactory.h"
+#include "Poco/Util/Application.h"
+#include "Poco/Mutex.h"
+
+
+class ApacheApplication: public Poco::Util::Application
+{
+public:
+	ApacheApplication();
+		/// Creates the ApacheApplication and sets the
+		/// ApacheChannel as the root logger channel.
+
+	~ApacheApplication();
+		/// Destroys the ApacheApplication.
+
+	void setup();
+		/// Initializes the application if called for the first
+		/// time; does nothing in later calls.
+
+	ApacheRequestHandlerFactory& factory();
+		/// Returns the ApacheRequestHandlerFactory.
+
+	static ApacheApplication& instance();
+		/// Returns the application instance.
+
+private:
+	bool _ready;
+	ApacheRequestHandlerFactory _factory;
+	Poco::FastMutex _mutex;
+};
+
+
+//
+// inlines
+//
+inline ApacheRequestHandlerFactory& ApacheApplication::factory()
+{
+	return _factory;
+}
+
+
+#endif // ApacheConnector_ApacheApplication_INCLUDED