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/PriorityExpire.h

@@ -0,0 +1,195 @@
+//
+// PriorityExpire.h
+//
+// Library: Foundation
+// Package: Events
+// Module:  PriorityExpire
+//
+// Implementation of the PriorityExpire template.
+//
+// Copyright (c) 2006-2011, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_PriorityExpire_INCLUDED
+#define Foundation_PriorityExpire_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include "Poco/Timestamp.h"
+#include "Poco/AbstractPriorityDelegate.h"
+
+
+namespace Poco {
+
+
+template <class TArgs>
+class PriorityExpire: public AbstractPriorityDelegate<TArgs>
+	/// Decorator for AbstractPriorityDelegate adding automatic 
+	/// expiring of registrations to AbstractPriorityDelegate.
+{
+public:
+	PriorityExpire(const AbstractPriorityDelegate<TArgs>& p, Timestamp::TimeDiff expireMilliSec):
+		AbstractPriorityDelegate<TArgs>(p),
+		_pDelegate(static_cast<AbstractPriorityDelegate<TArgs>*>(p.clone())), 
+		_expire(expireMilliSec*1000)
+	{
+	}
+	
+	PriorityExpire(const PriorityExpire& expire):
+		AbstractPriorityDelegate<TArgs>(expire),
+		_pDelegate(static_cast<AbstractPriorityDelegate<TArgs>*>(expire._pDelegate->clone())),
+		_expire(expire._expire),
+		_creationTime(expire._creationTime)
+	{
+	}
+
+	~PriorityExpire()
+	{
+		delete _pDelegate;
+	}
+	
+	PriorityExpire& operator = (const PriorityExpire& expire)
+	{
+		if (&expire != this)
+		{
+			delete this->_pDelegate;
+			this->_pTarget      = expire._pTarget;
+			this->_pDelegate    = expire._pDelegate->clone();
+			this->_expire       = expire._expire;
+			this->_creationTime = expire._creationTime;
+		}
+		return *this; 
+	}
+
+	bool notify(const void* sender, TArgs& arguments)
+	{
+		if (!expired())
+			return this->_pDelegate->notify(sender, arguments);
+		else
+			return false;
+	}
+
+	bool equals(const AbstractDelegate<TArgs>& other) const
+	{
+		return other.equals(*_pDelegate);
+	}
+
+	AbstractPriorityDelegate<TArgs>* clone() const
+	{
+		return new PriorityExpire(*this);
+	}
+
+	void disable()
+	{
+		_pDelegate->disable();
+	}
+
+	const AbstractPriorityDelegate<TArgs>* unwrap() const
+	{
+		return this->_pDelegate;
+	}
+
+protected:
+	bool expired() const
+	{
+		return _creationTime.isElapsed(_expire);
+	}
+
+	AbstractPriorityDelegate<TArgs>* _pDelegate;
+	Timestamp::TimeDiff _expire;
+	Timestamp _creationTime;
+
+private:
+	PriorityExpire();
+};
+
+
+template <>
+class PriorityExpire<void>: public AbstractPriorityDelegate<void>
+	/// Decorator for AbstractPriorityDelegate adding automatic
+	/// expiring of registrations to AbstractPriorityDelegate.
+{
+public:
+	PriorityExpire(const AbstractPriorityDelegate<void>& p, Timestamp::TimeDiff expireMilliSec):
+		AbstractPriorityDelegate<void>(p),
+		_pDelegate(static_cast<AbstractPriorityDelegate<void>*>(p.clone())),
+		_expire(expireMilliSec*1000)
+	{
+	}
+
+	PriorityExpire(const PriorityExpire& expire):
+		AbstractPriorityDelegate<void>(expire),
+		_pDelegate(static_cast<AbstractPriorityDelegate<void>*>(expire._pDelegate->clone())),
+		_expire(expire._expire),
+		_creationTime(expire._creationTime)
+	{
+	}
+
+	~PriorityExpire()
+	{
+		delete _pDelegate;
+	}
+
+	PriorityExpire& operator = (const PriorityExpire& expire)
+	{
+		if (&expire != this)
+		{
+			delete this->_pDelegate;
+			this->_pDelegate    = static_cast<AbstractPriorityDelegate<void>*>(expire._pDelegate->clone());
+			this->_expire       = expire._expire;
+			this->_creationTime = expire._creationTime;
+		}
+		return *this;
+	}
+
+	bool notify(const void* sender)
+	{
+		if (!expired())
+			return this->_pDelegate->notify(sender);
+		else
+			return false;
+	}
+
+	bool equals(const AbstractDelegate<void>& other) const
+	{
+		return other.equals(*_pDelegate);
+	}
+
+	AbstractPriorityDelegate<void>* clone() const
+	{
+		return new PriorityExpire(*this);
+	}
+
+	void disable()
+	{
+		_pDelegate->disable();
+	}
+
+	const AbstractPriorityDelegate<void>* unwrap() const
+	{
+		return this->_pDelegate;
+	}
+
+protected:
+	bool expired() const
+	{
+		return _creationTime.isElapsed(_expire);
+	}
+
+	AbstractPriorityDelegate<void>* _pDelegate;
+	Timestamp::TimeDiff _expire;
+	Timestamp _creationTime;
+
+private:
+	PriorityExpire();
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_PriorityExpire_INCLUDED