WIP: remove the old database abstraction layer

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

while here:
- remove: TextStream, SLog, TexTextStream

winixd/functions/chown.cpp

@@ -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
@@ -61,7 +61,6 @@ void Chown::MakePost()
 {
 	priv_changer.SetCur(cur);
 	priv_changer.SetSystem(system);
-	priv_changer.SetDb(db);
 
 	priv_changer.Change(true, false);
 }
@@ -71,7 +70,6 @@ void Chown::MakeGet()
 {
 	priv_changer.SetCur(cur);
 	priv_changer.SetSystem(system);
-	priv_changer.SetDb(db);
 
 	priv_changer.CheckAccess();
 }