Add Qt4 windowport

Originally by Ray Chason for 3.4.3, based on the Qt windowport by
Warwick Allison. The look and feel is mostly the same.

Some improvements over the Qt 3 interface are:

* Panes are resizable
* Full support for IBMgraphics, and walls and corridors are drawn with
  graphical primitives for a continuous appearance no matter what the font
  says
* Lots of irritating glitches fixed
* Menus support proportional fonts correctly

Adding this because the old Qt windowport cannot be compiled on Qt4,
even with Qt3 compatibility stuff.

TODO:
 - background map glyphs
 - status hilites
 - menucolors

win/Qt4/qt4msg.h

@@ -0,0 +1,42 @@
+// Copyright (c) Warwick Allison, 1999.
+// Qt4 conversion copyright (c) Ray Chason, 2012-2014.
+// NetHack may be freely redistributed.  See license for details.
+
+// qt4msg.h -- a message window
+
+#ifndef QT4MSG_H
+#define QT4MSG_H
+
+#include "qt4win.h"
+
+namespace nethack_qt4 {
+
+class NetHackQtMapWindow2;
+
+class NetHackQtMessageWindow : QObject, public NetHackQtWindow {
+	Q_OBJECT
+public:
+	NetHackQtMessageWindow();
+	~NetHackQtMessageWindow();
+
+	virtual QWidget* Widget();
+	virtual void Clear();
+	virtual void Display(bool block);
+	virtual void PutStr(int attr, const QString& text);
+
+	void Scroll(int dx, int dy);
+
+	void setMap(NetHackQtMapWindow2*);
+
+private:
+	QListWidget* list;
+	bool changed;
+	NetHackQtMapWindow2* map;
+
+private slots:
+	void updateFont();
+};
+
+} // namespace nethack_qt4
+
+#endif