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/qt4kde0.h

@@ -0,0 +1,14 @@
+/*	SCCS Id: @(#)qt_kde0.h	3.4	1999/11/19	*/
+/* Copyright (c) Warwick Allison, 1999. */
+/* NetHack may be freely redistributed.  See license for details. */
+
+#ifndef QT_DUMMYKDE
+#define QT_DUMMYKDE
+namespace nethack_qt4 {
+
+class KTopLevelWidget : public QMainWindow {
+        Q_OBJECT
+};
+
+}
+#endif