add last_single_clicked and last_single_clicked_2 rowrefs and add

add last_single_clicked and last_single_clicked_2 rowrefs and add

Fri Feb 22 22:39:59 2002  Kristian Rietveld  <kris@gtk.org>

        * gtk/gtktreeprivate.h: add last_single_clicked and
        last_single_clicked_2 rowrefs and add disable_popdown to the
        bitfield

        * gtk/gtktreeview.c (gtk_tree_view_destroy): add destroy stuff
        for two new rowrefs
        (gtk_tree_view_button_press): add some 'advanced' button handling,
        so double click is being handled right (double click madness was
        discovered by Anders Carlsson)

        * gtk/gtktreeview.c (gtk_tree_view_set_property): add missing
        break
        (gtk_tree_view_class_init): default value of headers_visible
        should be TRUE (both pointed out by Damon Chaplin, #71986)

        * gtk/gtktreeview.c (gtk_tree_view_real_start_interactive_search):
        connect to populate_popup,
        (gtk_tree_view_search_disable_popdown): new function,
        (gtk_tree_view_real_search_enable_popdown): ditto,
        (gtk_tree_view_search_enable_popdown): ditto,
        (gtk_tree_view_search_dialog_destroy): check for
        gtk-tree-view-popdown-disabled (#71868)

        * gtk/gtktreeview.c (gtk_tree_view_set_reorderable): move
        ->priv->reorderable assignment to bottom. (#72122)