WIP: remove the old database abstraction layer

remove such classes:
- DbBase
- DbConn
- DbTextStream
- Db

while here:
- remove: TextStream, SLog, TexTextStream

winixd/notify/notifythread.h

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2008-2018, Tomasz Sowa
+ * Copyright (c) 2008-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -80,6 +80,7 @@ private:
 	Patterns patterns;
 	TemplatesNotifyFunctions::NotifyStream notify_stream;
 	Ezc::Generator<TemplatesNotifyFunctions::NotifyStream, true> generator;
+	std::wstring msg_str;
 
 	virtual bool Init();
 	virtual bool SignalReceived();