(#285) Disabled keyboard tracking for spin boxes

Disabled keyboard tracking for spin boxes used in slider editors, so
that the valueChanged() signal is not emitted until the user has pressed
ENTER or the spin box loses focus.

Fwk/AppFwk/cafUserInterface/cafPdmUiSliderEditor.cpp

@@ -117,6 +117,7 @@ QWidget* PdmUiSliderEditor::createEditorWidget(QWidget * parent)
 
     m_spinBox = new QSpinBox(containerWidget);
     m_spinBox->setMaximumWidth(60);
+    m_spinBox->setKeyboardTracking(false);
     connect(m_spinBox, SIGNAL(valueChanged(int)), this, SLOT(slotSpinBoxValueChanged(int)));
 
     m_slider = new QSlider(Qt::Horizontal, containerWidget);