* glom/mode_data/datawidget/cellrenderer_dblist.cc:
* glom/mode_data/db_adddel/db_adddel.cc:
* glom/mode_design/layout/dialog_choose_field.cc:
* glom/mode_design/print_layouts/print_layout_toolbar_button.cc:
* glom/mode_design/print_layouts/window_print_layout_edit.h:
* glom/utility_widgets/imageglom.cc:
* glom/utility_widgets/layouttoolbarbutton.cc: Use std::vector instead of
std::list.
* glom/dialog_existing_or_new.cc: This one even used the intermediate type
directly, showing how necessary this API change was.