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/Data/ODBC/src/Connector.cpp

@@ -0,0 +1,64 @@
+//
+// Connector.cpp
+//
+// Library: Data/ODBC
+// Package: ODBC
+// Module:  Connector
+//
+// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#include "Poco/Data/ODBC/Connector.h"
+#include "Poco/Data/ODBC/SessionImpl.h"
+#include "Poco/Data/SessionFactory.h"
+
+
+namespace Poco {
+namespace Data {
+namespace ODBC {
+
+
+const std::string Connector::KEY("ODBC");
+bool Connector::_bindStringToLongVarChar(true);
+
+
+Connector::Connector()
+{
+}
+
+
+Connector::~Connector()
+{
+}
+
+
+Poco::AutoPtr<Poco::Data::SessionImpl> Connector::createSession(const std::string& connectionString,
+	std::size_t timeout)
+{
+	return Poco::AutoPtr<Poco::Data::SessionImpl>(new SessionImpl(connectionString, timeout));
+}
+
+
+void Connector::registerConnector()
+{
+	Poco::Data::SessionFactory::instance().add(new Connector());
+}
+
+
+void Connector::unregisterConnector()
+{
+	Poco::Data::SessionFactory::instance().remove(KEY);
+}
+
+
+void Connector::bindStringToLongVarChar(bool flag)
+{
+	_bindStringToLongVarChar = flag;
+}
+
+
+} } } // namespace Poco::Data::ODBC