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/Net/samples/dict/src/dict.cpp

@@ -0,0 +1,63 @@
+//
+// dict.cpp
+//
+// This sample demonstrates the StreamSocket and SocketStream classes.
+//
+// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Net/StreamSocket.h"
+#include "Poco/Net/SocketStream.h"
+#include "Poco/Net/SocketAddress.h"
+#include "Poco/StreamCopier.h"
+#include "Poco/Path.h"
+#include "Poco/Exception.h"
+#include <iostream>
+
+
+using Poco::Net::StreamSocket;
+using Poco::Net::SocketStream;
+using Poco::Net::SocketAddress;
+using Poco::StreamCopier;
+using Poco::Path;
+using Poco::Exception;
+
+
+int main(int argc, char** argv)
+{
+	const std::string HOST("dict.org");
+	const unsigned short PORT = 2628;
+	
+	if (argc != 2)
+	{
+		Path p(argv[0]);
+		std::cout << "usage: " << p.getBaseName() << " <term>" << std::endl;
+		std::cout << "       looks up <term> in dict.org and prints the results" << std::endl;
+		return 1;
+	}
+	std::string term(argv[1]);
+	
+	try
+	{
+		SocketAddress sa(HOST, PORT);
+		StreamSocket sock(sa);
+		SocketStream str(sock);
+		
+		str << "DEFINE ! " << term << "\r\n" << std::flush;
+		str << "QUIT\r\n" << std::flush;
+
+		sock.shutdownSend();
+		StreamCopier::copyStream(str, std::cout);
+	}
+	catch (Exception& exc)
+	{
+		std::cerr << exc.displayText() << std::endl;
+		return 1;
+	}
+	
+	return 0;
+}