Fixed incorrect TTQ rename (TTQ -> TQ)

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 38444c4879)

kdgantt/qlayoutengine_p.h

@@ -56,7 +56,7 @@
 
 
 #ifndef TQT_H
-#include "tqabstracttqlayout.h"
+#include "tqabstractlayout.h"
 #endif // TQT_H
 
 #ifndef TQT_NO_LAYOUT