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/AbstractDelegate.h

@@ -0,0 +1,110 @@
+//
+// AbstractDelegate.h
+//
+// Library: Foundation
+// Package: Events
+// Module:  AbstractDelegate
+//
+// Implementation of the AbstractDelegate template.
+//
+// Copyright (c) 2006-2011, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_AbstractDelegate_INCLUDED
+#define Foundation_AbstractDelegate_INCLUDED
+
+
+#include "Poco/Foundation.h"
+
+
+namespace Poco {
+
+
+template <class TArgs> 
+class AbstractDelegate
+	/// Base class for Delegate and Expire.
+{
+public:
+	AbstractDelegate()
+	{
+	}
+
+	AbstractDelegate(const AbstractDelegate& /*del*/)
+	{
+	}
+
+	virtual ~AbstractDelegate() 
+	{
+	}
+
+	virtual bool notify(const void* sender, TArgs& arguments) = 0;
+		/// Invokes the delegate's callback function.
+		/// Returns true if successful, or false if the delegate
+		/// has been disabled or has expired.
+
+	virtual bool equals(const AbstractDelegate& other) const = 0;
+		/// Compares the AbstractDelegate with the other one for equality.
+
+	virtual AbstractDelegate* clone() const = 0;
+		/// Returns a deep copy of the AbstractDelegate.
+
+	virtual void disable() = 0;
+		/// Disables the delegate, which is done prior to removal.
+		
+	virtual const AbstractDelegate* unwrap() const
+		/// Returns the unwrapped delegate. Must be overridden by decorators
+		/// like Expire.
+	{
+		return this;
+	}
+};
+
+
+template <> 
+class AbstractDelegate<void>
+	/// Base class for Delegate and Expire.
+{
+public:
+	AbstractDelegate()
+	{
+	}
+
+	AbstractDelegate(const AbstractDelegate&)
+	{
+	}
+
+	virtual ~AbstractDelegate() 
+	{
+	}
+
+	virtual bool notify(const void* sender) = 0;
+		/// Invokes the delegate's callback function.
+		/// Returns true if successful, or false if the delegate
+		/// has been disabled or has expired.
+
+	virtual bool equals(const AbstractDelegate& other) const = 0;
+		/// Compares the AbstractDelegate with the other one for equality.
+
+	virtual AbstractDelegate* clone() const = 0;
+		/// Returns a deep copy of the AbstractDelegate.
+
+	virtual void disable() = 0;
+		/// Disables the delegate, which is done prior to removal.
+		
+	virtual const AbstractDelegate* unwrap() const
+		/// Returns the unwrapped delegate. Must be overridden by decorators
+		/// like Expire.
+	{
+		return this;
+	}
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_AbstractDelegate_INCLUDED