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/samples/StringTokenizer/src/StringTokenizer.cpp

@@ -0,0 +1,29 @@
+//
+// StringTokenizer.cpp
+//
+// This sample demonstrates the usage of the StringTokenizer class.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/StringTokenizer.h"
+#include <iostream>
+
+
+using Poco::StringTokenizer;
+
+
+int main(int argc, char** argv)
+{
+	std::string tokens = "white; black; magenta, blue, green; yellow";
+	StringTokenizer tokenizer(tokens, ";,", StringTokenizer::TOK_TRIM);
+	for (StringTokenizer::Iterator it = tokenizer.begin(); it != tokenizer.end(); ++it)
+	{
+		std::cout << *it << std::endl;
+	}
+	return 0;
+}