[GTK] fix CanvasBackend sizing issues with Gtk3
[GTK] fix Gtk3 dll names for Windows
[GTK] fix default icon size
Merge branch 'gtk-fixes' into gtk3
[WPF] center all lines in wrapped centered labels
[Samples] exit application when main window is closed
[Samples] add sample for ellipsized label
[Samples] add sample for multiline text entry
Merge branch 'wpf-centered-label-fix'
Merge branch 'samples'

Conflicts:
	TestApps/Samples/Samples/TextEntries.cs
Add cursor position and selection support to TextEntry

* add properties for cursor position and selection bounds
* add SelectedText property (which is writeble to support direct selection changes)
* add SelectionChanged event
* includes ComboBoxTextEntry support

WPF and GTK support is included. Mac has to be added.
Add text selection to samples
Merge branch 'add-text-cursor-selection'