* NEW: A new control, MaskBox, that is a TextBox with an optional mask.
* NEW: ButtonBox now uses a MaskBox.
[GB.GTK]
* BUG: TextBox.Selection.Length now returns the correct value.
[GB.QT4]
* BUG: TextBox.Selection.Start now returns the cursor position when nothing
is selected.
git-svn-id: svn://localhost/gambas/trunk@3445 867c0c6c-44f3-4631-809d-bfa615b0a4ec