frontlib refactoring
socket.h now completely wraps all the lowlevel neworking, so it would be easy
to switch away from SDL_net if needed. Also reduced global state by making an
IPC connection an object-like thing.
#include <QApplication>
#include "mainform.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
MyWindow *mainWin = new MyWindow;
mainWin->show();
return app.exec();
}