[lazarus] GTK+ interface status on Win32

[Keith Bowes]

Hello.  I have gotten Lazarus with the GTK+ interface to compile on Win32.
The only problem seems to be gtk_target_list_unref in
TgtkObject.SetClipboardWidget; commenting it out seems to solve that little
problem.

But the real problems start when you try to run the IDE.  I keep getting the
following lines on the console repeatedly while it looks like it's just
hanging on the splash screen until the program stops responding:
Gtk-CRITICAL **: file gtkfixed.c: line 142 (gtk_fixed_put): assertion
`widget != NULL' failed
[TWinControl.AttachSignals] TLISTVIEW
[TWinControl.InitializeWnd]  TLISTVIEW
TODO: [TWinControl.InitializeWnd] move this code to the interface
[TWinControl.GetHandle] TLISTVIEW(ListView1)
[TControl.GetText]
<TControl.GetText> End

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