WIP: remove the old database abstraction layer

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

while here:
- remove: TextStream, SLog, TexTextStream

winixd/core/sessionparser.cpp

@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2008-2014, Tomasz Sowa
+ * Copyright (c) 2008-2024, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -60,7 +60,7 @@ char file_path[WINIX_OS_PATH_SIZE];
 
 	container.Clear();
 
-	if( !wide_to_utf8(path, file_path, WINIX_OS_PATH_SIZE) )
+	if( !pt::wide_to_utf8(path, (char*)file_path, WINIX_OS_PATH_SIZE) )
 		return false;
 
 	file.open(file_path, std::ios_base::in | std::ios_base::binary);