Gambas 3.6.2

• What's new
• ChangeLog
• Compilation and installation

[DEVELOPMENT ENVIRONMENT]
* NEW: Improve Cygwin System Information awareness.
* BUG: Control properties containing a database table name can be modified
 again.
[GB.DATA]
* BUG: Don't use forward typedefs as some compilers don't seem to
 understand them.
* BUG: Silence false positive compiler warnings.
[GB.DB.MYSQL]
* BUG: Try to reconnect to a lost database server when listing existing
 databases and the fields of a table.
[GB.FORM]
* NEW: The SliderBox is now in the same change group as Slider.
[GB.GTK]
* BUG: Fix an uninitialized variable.
* BUG: Fix warning with Slider or SpinBox when setting a minimum value
 equal to the maximum value, or the contrary.
[GB.GTK3]
* BUG: Fix an uninitialized variable.
* BUG: Fix warning with Slider or SpinBox when setting a minimum value
 equal to the maximum value, or the contrary.
* BUG: Paint.Reset() now works as expected on non-cached DrawingArea.
[GB.GUI.AREA]
* BUG: TreeView renaming works now if the renamed item is not visible.
[GB.MEDIA.FORM]
* BUG: MediaView: The Control property has been renamed as ShowControl.
[GB.QT4]
* BUG: The Menu.Checked property now returns the correct value for
 non-radio menu items.
* BUG: TextBox: Workaround a Qt4 weird behaviour that sometimes lose the
 selection. Same workaround for editable ComboBox.
* BUG: Fix a compilation warning.