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/ActiveStarter.h

@@ -0,0 +1,48 @@
+//
+// ActiveStarter.h
+//
+// Library: Foundation
+// Package: Threading
+// Module:  ActiveObjects
+//
+// Definition of the ActiveStarter class.
+//
+// Copyright (c) 2006-2007, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_ActiveStarter_INCLUDED
+#define Foundation_ActiveStarter_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include "Poco/ThreadPool.h"
+#include "Poco/ActiveRunnable.h"
+
+
+namespace Poco {
+
+
+template <class OwnerType>
+class ActiveStarter
+	/// The default implementation of the StarterType 
+	/// policy for ActiveMethod. It starts the method
+	/// in its own thread, obtained from the default
+	/// thread pool.
+{
+public:
+	static void start(OwnerType* /*pOwner*/, ActiveRunnableBase::Ptr pRunnable)
+	{
+		ThreadPool::defaultPool().start(*pRunnable);
+		pRunnable->duplicate(); // The runnable will release itself.
+	}
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_ActiveStarter_INCLUDED