* plugins/gtk+/glade-gtk.c: disable GtkImage::stock when edit type is not in stock mode.
  This fixs a bug pasting a filename GtkImage.

* gladeui/glade-property-class.c: glade_property_class_make_object_from_string() now returns NULL
  for pixbuf props on an empty string, so you can set up pixbuf props back to NULL.

* gladeui/glade-widget.c: almost fixed bug #480495, it does not crash anymore.
  It refuses to reparent a widget if it cant embed it.

svn path=/trunk/; revision=1629