WIP: remove the old database abstraction layer

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

while here:
- remove: TextStream, SLog, TexTextStream

winixd/templates/templates.h

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2008-2022, Tomasz Sowa
+ * Copyright (c) 2008-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -51,7 +51,6 @@
 #include "core/system.h"
 #include "core/sessionmanager.h"
 #include "html/htmlparser.h"
-#include "db/db.h"
 #include "core/winixrequest.h"
 
 
@@ -81,7 +80,6 @@ namespace TemplatesFunctions
 	extern pt::HTMLParser    html_filter;
 	extern Ezc::Stack        empty_stack;
 
-	extern Db      * db;
 	extern Cur     * cur; // will be removed when TemplateBase class will be implemented
 	extern Config  * config; // will be removed when TemplateBase class will be implemented
 	extern System  * system; // will be removed when TemplateBase class will be implemented
@@ -404,16 +402,6 @@ namespace TemplatesFunctions
 	void server_mode_is(Info & i);
 
 
-	/*
-		slog
-	*/
-	void slog_tab(Info & i);
-	void slog_tab_is_info(Info & i);
-	void slog_tab_is_warning(Info & i);
-	void slog_tab_is_error(Info & i);
-	void slog_tab_print(Info & i);
-
-
 	/*
 		stat
 	*/
@@ -581,7 +569,6 @@ public:
 
 	void SetConfig(Config * pconfig);
 	void SetCur(Cur * pcur);
-	void SetDb(Db * pdb);
 	void SetSystem(System * psystem);
 	void SetFunctions(Functions * pfunctions);
 	void SetSessionManager(SessionManager * psession_manager);