2005-06-15  Kristian Rietveld  <kris@gtk.org>

	Patch for #163214 (reported by Tommi Komulainen) and fixes some
	other scrolling/validation related bugs along the why.

	* gtk/gtktreeview.c (gtk_tree_view_size_request): run
	do_validate_rows once and don't queue a size request there,
	(gtk_tree_view_size_allocate): don't update vadj value without
	reason, sync top_row/dy after the window sizes and adjustments
	are in sync again,
	(validate_visible_area): always update dy when scrolling,
	manually set top_row here after changing the vadj (don't depend
	on _adjustment_changed and top_row/dy sync to do this), since we
	now always set top_row here correctly, we can always free
	scroll_to_path at the end which avoids infinite expose loops,
	(do_validate_rows): add queue_resize boolean, remove top_row/dy
	sync here, we cannot do it safely at this place since the
	window sizes and adjustments are out of sync,
	(validate_rows), (validate_rows_handler): update call to
	do_validate_rows().