fixed: security vulnerability in 'ln' winix function

a user could create a hardlink to any file and the new link 
       had user_id, group_id and permissions the same as for new generated files,
       this allowes to overwrite any existing file in the filesystem,
       now user_id, group_id, permissions are the same as from the oryginal file



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@941 e52654a7-88a9-db11-a3e9-0013d4bc506e

functions/privchanger.cpp

@@ -2,7 +2,7 @@
  * This file is a part of Winix
  * and is not publicly distributed
  * 
- * Copyright (c) 2010, Tomasz Sowa
+ * Copyright (c) 2010-2013, Tomasz Sowa
  * All rights reserved.
  * 
  */
@@ -271,7 +271,11 @@ void PrivChanger::PrivOneItem()
 }
 
 
-
+/*
+	!! IMPROVE ME
+	we can add a counter to measure how many there are access denieds for files/directories
+	and when changing only one file/directory we can show access denied message
+*/
 void PrivChanger::Change(bool change_owner_, bool change_priv_)
 {
 	if( !CheckAccess() )