input.Makefile: Testing: Added test/accept-all

csv2db: COPY FROM: Fixed %-injection bug where column names' %s were not escaped prior to cursor.mogrify(), by changing the code to use inline db.esc_value() instead

bin/map: in_is_xml: doc2rows(): "Root not found in input" error: Changed SystemExit to a warning because this is a normal circumstance in the base case where the input XML file contains no rows

README.TXT: Datasource setup: Documented how to map each table's columns

README.TXT: Datasource setup: Changed "Auto-create the src column spreadsheets" to "Auto-create map spreadsheets" and updated command to bootstrap all maps, including newly-autogeneratable via maps

input.Makefile: Maps building: maps/$(via).%.csv: Auto-create by copying the src map if doesn't exist. Existing maps discovery: Look up via format in src maps' roots if no via map already exists.

src_map: Fixed bug where non-header rows needed to be materialized with empty fields for each column in the header

input.Makefile: Maps building: Via maps cleanup: Match maps/$(via).%.csv with pattern instead of $(viaMaps) var so that a non-existing via map will have the recipe run, too. When auto-creating via maps is later added, this will be required.

inputs/*/maps/src.*.csv: Regenerated using new src_map output format

parallelproc.py: MultiProducerPool: Removed warning if not using parallel processing because this also gets generated when it's explicitly turned off, which is currently the case and clutters up stderr when testing