* glue/selectiondata.c : expose data field. * gtk/SelectionData.custom : add Data property. [Fixes #53397] svn path=/trunk/gtk-sharp/; revision=22563
* glue/selectiondata.c : new glue to make SelectionData opaque * glue/Makefile.am : add file * glue/makefile.win32 : add file * gtk/Gtk.metadata : mark SelectionData opaque, unhide Set method * gtk/SelectionData.custom : invoke glue methods for opaque fields. * gtk/gtk-api.xml : regen * sample/TestDnd.cs : update to new SelectionData API. svn path=/trunk/gtk-sharp/; revision=21502