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/ScopedLock.h

@@ -0,0 +1,121 @@
+//
+// ScopedLock.h
+//
+// Library: Foundation
+// Package: Threading
+// Module:  Mutex
+//
+// Definition of the ScopedLock template class.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_ScopedLock_INCLUDED
+#define Foundation_ScopedLock_INCLUDED
+
+
+#include "Poco/Foundation.h"
+
+
+namespace Poco {
+
+
+template <class M>
+class ScopedLock
+	/// A class that simplifies thread synchronization
+	/// with a mutex.
+	/// The constructor accepts a Mutex (and optionally
+	/// a timeout value in milliseconds) and locks it.
+	/// The destructor unlocks the mutex.
+{
+public:
+	explicit ScopedLock(M& mutex): _mutex(mutex)
+	{
+		_mutex.lock();
+	}
+	
+	ScopedLock(M& mutex, long milliseconds): _mutex(mutex)
+	{
+		_mutex.lock(milliseconds);
+	}
+	
+	~ScopedLock()
+	{
+		try
+		{
+			_mutex.unlock();
+		}
+		catch (...)
+		{
+			poco_unexpected();
+		}
+	}
+
+private:
+	M& _mutex;
+
+	ScopedLock();
+	ScopedLock(const ScopedLock&);
+	ScopedLock& operator = (const ScopedLock&);
+};
+
+
+template <class M>
+class ScopedLockWithUnlock
+	/// A class that simplifies thread synchronization
+	/// with a mutex.
+	/// The constructor accepts a Mutex (and optionally
+	/// a timeout value in milliseconds) and locks it.
+	/// The destructor unlocks the mutex.
+	/// The unlock() member function allows for manual
+	/// unlocking of the mutex.
+{
+public:
+	explicit ScopedLockWithUnlock(M& mutex): _pMutex(&mutex)
+	{
+		_pMutex->lock();
+	}
+	
+	ScopedLockWithUnlock(M& mutex, long milliseconds): _pMutex(&mutex)
+	{
+		_pMutex->lock(milliseconds);
+	}
+	
+	~ScopedLockWithUnlock()
+	{
+		try
+		{
+			unlock();
+		}
+		catch (...)
+		{
+			poco_unexpected();
+		}
+	}
+	
+	void unlock()
+	{
+		if (_pMutex)
+		{
+			_pMutex->unlock();
+			_pMutex = 0;
+		}
+	}
+
+private:
+	M* _pMutex;
+
+	ScopedLockWithUnlock();
+	ScopedLockWithUnlock(const ScopedLockWithUnlock&);
+	ScopedLockWithUnlock& operator = (const ScopedLockWithUnlock&);
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_ScopedLock_INCLUDED