* NEW: SwitchButton is a new control that displays an ON/OFF button.

[GB.GTK]
* NEW: Rework Style.PaintBox() method.
* NEW: Style.StateOf() is a new method that returns the state flags of a 
  specific control.
* NEW: Style.BackgroundOf() is a new method that returns the actual 
  background color of a specific control.
* NEW: Style.ForegroundOf() is a new method that returns the actual 
  background color of a specific control.
* NEW: All state flag constants of the Draw class are now implemented in 
  the Style class.

[GB.GTK3]
* NEW: GTK3+ support continues! By te way, GTK3+ theming support is a 
  fucking nightmare.

[GB.QT4]
* NEW: Rework Style.PaintBox() method.
* NEW: Style.StateOf() is a new method that returns the state flags of a 
  specific control.
* NEW: Style.BackgroundOf() is a new method that returns the actual 
  background color of a specific control.
* NEW: Style.ForegroundOf() is a new method that returns the actual 
  background color of a specific control.
* NEW: All state flag constants of the Draw class are now implemented in 
  the Style class.

[GB.WEB]
* NEW: Session.Exist() is a new method that returns if a specific key is 
  stored in the session.


git-svn-id: svn://localhost/gambas/trunk@6058 867c0c6c-44f3-4631-809d-bfa615b0a4ec