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/qt4delay.cpp

@@ -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.
+
+// qt4delay.cpp -- implement a delay
+
+#include "hack.h"
+#undef Invisible
+#undef Warning
+#undef index
+#undef msleep
+#undef rindex
+#undef wizard
+#undef yn
+#undef min
+#undef max
+
+#include <QtGui/QtGui>
+#include "qt4delay.h"
+
+namespace nethack_qt4 {
+
+// RLC Can we use QTimer::single_shot for this?
+NetHackQtDelay::NetHackQtDelay(int ms) :
+    msec(ms), m_timer(0), m_loop(this)
+{
+}
+
+void NetHackQtDelay::wait()
+{
+    m_timer = startTimer(msec);
+    m_loop.exec();
+}
+
+void NetHackQtDelay::timerEvent(QTimerEvent* timer)
+{
+    m_loop.exit();
+    killTimer(m_timer);
+    m_timer = 0;
+}
+
+} // namespace nethack_qt4