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/FIFOEvent.h

@@ -0,0 +1,63 @@
+//
+// FIFOEvent.h
+//
+// Library: Foundation
+// Package: Events
+// Module:  FIFOEvent
+//
+// Implementation of the FIFOEvent template.
+//
+// Copyright (c) 2006-2011, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_FIFOEvent_INCLUDED
+#define Foundation_FIFOEvent_INCLUDED
+
+
+#include "Poco/AbstractEvent.h"
+#include "Poco/FIFOStrategy.h"
+#include "Poco/AbstractDelegate.h"
+
+
+namespace Poco {
+
+
+//@ deprecated
+template <class TArgs, class TMutex = FastMutex> 
+class FIFOEvent: public AbstractEvent < 
+	TArgs, 
+	FIFOStrategy<TArgs, AbstractDelegate<TArgs>>,
+	AbstractDelegate<TArgs>,
+	TMutex
+>
+	/// A FIFOEvent uses internally a FIFOStrategy which guarantees
+	/// that delegates are invoked in the order they were added to
+	/// the event.
+	///
+	/// Note that as of release 1.4.2, this is the default behavior
+	/// implemented by BasicEvent, so this class is provided
+	/// for backwards compatibility only.
+{
+public:
+	FIFOEvent()
+	{
+	}
+
+	~FIFOEvent()
+	{
+	}
+
+private:
+	FIFOEvent(const FIFOEvent& e);
+	FIFOEvent& operator = (const FIFOEvent& e);
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_FIFOEvent_INCLUDED