removed: dependencies to 'tz' system structure

now we are using PT::Date from pikotools



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@839 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/app.cpp

@@ -612,8 +612,7 @@ void App::PrepareSessionCookie()
 	}
 	else
 	{
-		time_t t = std::time(0) + config.session_remember_max_idle;
-		tm expires = Time(t);
+		PT::Date expires = cur.request->start_time + config.session_remember_max_idle;
 		cur.request->SetCookie(config.http_session_id_name.c_str(), cur.session->id, &expires);
 	}
 }