Revert a careless change

Seems I did something wrong with SVN. Revert the changed parts
that should not have been changed.

JGE/src/Qtmain.cpp

@@ -1,6 +1,6 @@
 #define GL_GLEXT_PROTOTYPES
-#include <QtOpenGL/QtOpenGL>
-#include <QtCore/QTime>
+#include <QtOpenGL>
+#include <QTime>
 
 #ifdef Q_WS_MAEMO_5
 // For volume buttons support

JGE/src/Xmain.cpp

@@ -50,8 +50,8 @@ JGameLauncher* g_launcher = NULL;
 //------------------------------------------------------------------------
 
 Display* gXDisplay = NULL;
-Window gXWindow = (Window)0;
-GLXWindow glxWin = (GLXWindow)0;
+Window gXWindow = (Window)NULL;
+GLXWindow glxWin = (GLXWindow)NULL;
 
 static std::multiset<JButton> gControllerState;
 static std::multiset<JButton> gPrevControllerState;
@@ -173,7 +173,7 @@ void KillGLWindow(void) // Properly Kill The Window
 {
   if (gXWindow && gXDisplay)
     XDestroyWindow(gXDisplay, gXWindow);
-  gXWindow = (Window)0;
+  gXWindow = (Window)NULL;
 }