bugfix: inputs/newWorld/newWorldCountries/postprocess.sql: use UPDATE statement (followed by VACUUM ANALYZE to remove dead tuples) instead of in-place update (ALTER COLUMN TYPE USING), so that the statement can be run even after the public schema has been installed and its views use the columns. (a view using the columns would normally block an ALTER COLUMN TYPE statement on a referenced column.)

bugfix: lib/runscripts/table.run: remake_VegBIEN_mappings(): when remaking, do not remake header.csv, because it should keep the original CSV columns rather than being reset to whatever the current staging table columns happen to be. to force-regenerate this, instead delete it first and then run remake_VegBIEN_mappings(). remake mode will now just regenerate map.csv from header.csv, in case map.csv's columns are incomplete or out of order.

bugfix: lib/runscripts/table.run: remake_VegBIEN_mappings(): when remaking, do not remake header.csv, because it should keep the original CSV columns rather than being reset to whatever the current staging table columns happen to be. to force-regenerate this, instead delete it first and then run remake_VegBIEN_mappings(). remake mode will now just regenerate map.csv from header.csv, in case map.csv's columns are incomplete or out of order.

bugfix: lib/runscripts/table.run: map_table(): do not rename view columns, since their column names come from their (column-renamed) joined tables rather than from a map.csv. header.csv, map.csv for views will generally become out-of-date whenever the joined tables change, so it is better not to generate them at all.

lib/runscripts/table.run: added $is_view

lib/runscripts/table.run: added $postprocess_sql to store postprocess.sql path, and use it in postprocess()

bugfix: lib/sh/local.sh: prevent automated tests when the public schema contains the live DB, so the user doesn't have to explicitly specify can_test= when running the import on vegbiendev

bugfix: lib/runscripts/table.run: import(): allow automated tests (remake_VegBIEN_mappings) to be disabled by setting can_test= if the public schema shouldn't be modified (e.g. if it's the live DB)

bugfix: inputs/*/*/postprocess.sql: made all operations idempotent, so that postprocess.sql can be run repeatedly (e.g. by new-style import)

schemas/util.sql: create_if_not_exists(): also suppress "multiple primary keys are not allowed" error