wrappers

- Move GtkClipboard, GtkNativeDiglog, GtkRadioButton, GtkScrolledWindow,
GtkStatusIcon (except for function that requires GdkRectangle as a
parameter), GtkTargetList

Change-Id: I2432d80949c66b9f00cdef08ee506f90c9690a20
Signed-off-by: Paul D'Pong <sdamrong@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.swt/+/179697
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>