added: IP ban mechanism (not finished yet -- we need a winix function to remove a ban)

now after some incorrent login attempts your IP can be banned or blocked
       (see new config variables)


git-svn-id: svn://ttmath.org/publicrep/winix/trunk@902 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/session.cpp

@@ -78,6 +78,7 @@ void Session::Clear(bool clear_plugin_data)
 
 	log_buffer.Clear();
 	last_css.clear();
+	ip_ban = 0;
 
 	if( clear_plugin_data )
 		plugin_data.Resize(0);