fix: schemas/public_.sql: 2014-6-4.Iara_Lacher.reserve_prioritization: is_threatened_iucn: generate this much faster by doing a LEFT JOIN, which can reuse the same in-memory hash index for every row

bugfix: schemas/public_.sql: wrapper functions can't use util-schema types because these will cause the wrapper function to be cascadingly dropped when the util schema is reinstalled

bugfix: in_south_america(): must use util.contained_within__no_dateline() instead of util.contained_within_approx() to ensure that the more accurate geometry logic is used

bugfix: schemas/public_.sql: source__observation_type(): don't display NOTICEs about the search_path, because this function will be called millions of times

bugfix: schemas/public_.sql: in_iucn_red_list(): don't display NOTICEs about the search_path, because this function will be called millions of times

schemas/public_.sql: 2014-6-4.Iara_Lacher.reserve_prioritization: added is_threatened_iucn

schemas/public_.sql: added in_iucn_red_list()

schemas/public_.sql: added iucn_red_list, materialized from iucn_red_list_view

bugfix: schemas/vegbien.sql: iucn_red_list_view: need to include only names with an accepted name, and distinctify on the accepted names

schemas/public_.sql: added iucn_red_list