lupdate -pro project_files/hedgewars.pro -no-obsolete
yes, I think the lupdate commits should be separate and should contain the -no-obsole flag
#include <QtGui/QApplication>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}