'RequestSize' instead of 'SizeRequest' to avoid a name clash.
* api/gtk-api.xml:
* sources/Gtk.metadata: out param for gtk_widget_get_size_request.
svn path=/trunk/gtk-sharp/; revision=11046
* gtk/Style.custom: bind it.
* gtk/Widget.custom: bind it.
* glue/widget.c: Wrapper to fetch a GdkWindow from a widget.
* glue/style.c: wrapper routines for getting/setting the thickness
on a GtkStyle.
svn path=/trunk/gtk-sharp/; revision=7755