Make the entry context menu work in editable text cells. The changes are

Make the entry context menu work in editable text cells. The changes are

Sun Jun  6 23:57:21 2004  Matthias Clasen  <maclas@gmx.de>

	Make the entry context menu work in editable text cells. The changes are
	based on a patch by Kristian Rietveld, which implemented an approach outlined
	by Owen Taylor.  (#50075)

	* gtk/gtkcellrenderertext.c (gtk_cell_renderer_text_focus_out_event): Ignore
	focus out if the entry menu is posted.
	(gtk_cell_renderer_text_populate_popup): Mark the entry menu as posted, and
	set up a signal handler to clear the flag if the menu is unmapped.
	(gtk_cell_renderer_text_popup_unmap): Clear the in_entry_menu flag, set up
	a timeout to stop editing if the focus is lost.
	(popdown_timeout): Stop editing if the entry doesn't have focus any more.
	(gtk_cell_renderer_text_start_editing): Connect to the populate_popup signal
	on the entry and keep a pointer to the entry.
	(gtk_cell_renderer_text_editing_done): Disconnect from popuplate_popup, clear
	the pointer to the entry.