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/qt4set.h

@@ -0,0 +1,57 @@
+// Copyright (c) Warwick Allison, 1999.
+// Qt4 conversion copyright (c) Ray Chason, 2012-2014.
+// NetHack may be freely redistributed.  See license for details.
+
+// qt4set.h -- the Qt settings
+
+#ifndef QT4SET_H
+#define QT4SET_H
+
+namespace nethack_qt4 {
+
+class NetHackQtGlyphs;
+
+class NetHackQtSettings : public QDialog {
+	Q_OBJECT
+public:
+	// Size of window - used to decide default sizes
+	NetHackQtSettings(int width, int height);
+
+	NetHackQtGlyphs& glyphs();
+	const QFont& normalFont();
+	const QFont& normalFixedFont();
+	const QFont& largeFont();
+
+	bool ynInMessages();
+
+signals:
+	void fontChanged();
+	void tilesChanged();
+
+public slots:
+	void toggleGlyphSize();
+	void setGlyphSize(bool);
+
+private:
+	QSpinBox tilewidth;
+	QSpinBox tileheight;
+	QLabel widthlbl;
+	QLabel heightlbl;
+	QCheckBox whichsize;
+	QSize othersize;
+
+	QComboBox fontsize;
+
+	QFont normal, normalfixed, large;
+
+	NetHackQtGlyphs* theglyphs;
+
+private slots:
+	void resizeTiles();
+};
+
+extern NetHackQtSettings* qt_settings;
+
+} // namespace nethack_qt4
+
+#endif