Always look up and create the Motif drag window as a child of the root

Always look up and create the Motif drag window as a child of the root

Wed Dec  4 14:31:46 2002  Owen Taylor  <otaylor@redhat.com>

        * gdk/x11/gdkdnd-x11.c: Always look up and create the
        Motif drag window as a child of the root window of screen 0
        rather than the default screen. (#100362, Erwann Chenede)

        * gdk/x11/gdkdnd-x11.c (motif_read_initiator_info):
        Return FALSE, not GDK_FILTER_REMOVE on failure; this
        isn't a filter function.

        * gdk/x11/gdkselection-x11.c gtk/gtkselection.c: Add
        some g_return_if_fail() to catch selection == None more
        gracefully than an X error.