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/Foundation/include/Poco/Instantiator.h

@@ -0,0 +1,82 @@
+//
+// Instantiator.h
+//
+// Library: Foundation
+// Package: Core
+// Module:  Instantiator
+//
+// Definition of the Instantiator class.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_Instantiator_INCLUDED
+#define Foundation_Instantiator_INCLUDED
+
+
+#include "Poco/Foundation.h"
+
+
+namespace Poco {
+
+
+template <class Base>
+class AbstractInstantiator
+	/// The common base class for all Instantiator instantiations.
+	/// Used by DynamicFactory.
+{
+public:
+	AbstractInstantiator()
+		/// Creates the AbstractInstantiator.
+	{
+	}
+	
+	virtual ~AbstractInstantiator()
+		/// Destroys the AbstractInstantiator.
+	{
+	}
+	
+	virtual Base* createInstance() const = 0;
+		/// Creates an instance of a concrete subclass of Base.	
+
+private:
+	AbstractInstantiator(const AbstractInstantiator&);
+	AbstractInstantiator& operator = (const AbstractInstantiator&);
+};
+
+
+template <class C, class Base>
+class Instantiator: public AbstractInstantiator<Base>
+	/// A template class for the easy instantiation of 
+	/// instantiators. 
+	///
+	/// For the Instantiator to work, the class of which
+	/// instances are to be instantiated must have a no-argument
+	/// constructor.
+{
+public:
+	Instantiator()
+		/// Creates the Instantiator.
+	{
+	}
+	
+	virtual ~Instantiator()
+		/// Destroys the Instantiator.
+	{
+	}
+
+	Base* createInstance() const
+	{
+		return new C;
+	}
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_Instantiator_INCLUDED