ComboBox widget now has a AutoSize property default set to False
ComboBox widget now has a AutoSize property default set to False

* ComboBox was always auto sized which is not always desired.
  We now have a property to control that behaviour.
* Default is False, in preperation for layout managers which
  control the size.
* Widget frame borders are now retrieved from the current Style
  instance.
* default Height is set to 24px. The same default used for TfpgEdit
  widget. Default sizes have been moved up into TfpgBaseComboBox,
  out of TfpgBaseStaticCombo.

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI