before including the Xinerama header, make sure Bool is defined.

The Xlib.h Bool define has to be removed before including Qt headers,
so this makes sure that things work properly...

svn path=/trunk/kdebase/kwin/; revision=131909

workspace.h

@@ -20,6 +20,10 @@ Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
 
 #include <X11/Xlib.h>
 #ifdef HAVE_XINERAMA
+#  ifndef Bool
+// if Bool isn't defined, then the Xinerama header will have problems...
+#    define Bool int
+#  endif
 extern "C" {
 #include <X11/extensions/Xinerama.h>
 };