Qt: show main window normally instead of maximized

Sidenote: The main window size calculations are getting stupid.
It would be better to find out the widget sizes and shift
the splitter up, instead of letting it just take up half of the main window.

Idea and part of the code by Richard Henschel

win/Qt/qt_menu.cpp

@@ -1115,8 +1115,7 @@ void NetHackQtTextWindow::Display(bool block UNUSED)
 #endif
     int mh = screensize.height()*3/5;
     if ( (qt_compact_mode && lines->TotalHeight() > mh) || use_rip ) {
-	// big, so make it fill
-	showMaximized();
+        showNormal();
     } else {
 	move(0, 0);
 	adjustSize();