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/qt4win.h

@@ -0,0 +1,49 @@
+// Copyright (c) Warwick Allison, 1999.
+// Qt4 conversion copyright (c) Ray Chason, 2012-2014.
+// NetHack may be freely redistributed.  See license for details.
+
+// Qt Binding for NetHack 3.4
+//
+// Unfortunately, this doesn't use Qt as well as I would like,
+// primarily because NetHack is fundamentally a getkey-type
+// program rather than being event driven (hence the ugly key
+// and click buffer rather), but also because this is my first
+// major application of Qt.
+//
+
+#ifndef qt4win_h
+#define qt4win_h
+
+namespace nethack_qt4 {
+
+class NetHackQtWindow {
+public:
+	NetHackQtWindow();
+	virtual ~NetHackQtWindow();
+
+	virtual QWidget* Widget() =0;
+
+	virtual void Clear();
+	virtual void Display(bool block);
+	virtual bool Destroy();
+	virtual void CursorTo(int x,int y);
+	virtual void PutStr(int attr, const QString& text);
+        void PutStr(int attr, const char *text)
+        {
+            PutStr(attr, QString::fromUtf8(text).replace(QChar(0x200B), ""));
+        }
+	virtual void StartMenu();
+	virtual void AddMenu(int glyph, const ANY_P* identifier, char ch, char gch, int attr,
+			const QString& str, bool presel);
+	virtual void EndMenu(const QString& prompt);
+	virtual int SelectMenu(int how, MENU_ITEM_P **menu_list);
+	virtual void ClipAround(int x,int y);
+	virtual void PrintGlyph(int x,int y,int glyph);
+	virtual void UseRIP(int how, time_t when);
+
+	int nhid;
+};
+
+} // namespace nethack_qt4
+
+#endif