- Removed GtkTreeMenu from gtk-docs.sgml
- Removed GtkTreeMenu from gtk3-sections.txt
- Removed GtkTreeMenu from gtk.symbols
- Make GtkTreeMenu apis prefixed with '_' (including _get_type()).
- Updated GtkComboBox sources to use the private apis
- Updated GtkCellView to not mention #GtkTreeMenu in gtk-doc statements
- Updated tests/testtreemenu to not use a GtkTreeMenu but still
show a very fancy GtkComboBox
- Moved gtktreemenu.h to private headers section in the makefile.
- Removed include of gtktreemenu.h from gtk.h