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

src_map: Also add columns for the output mappings and comments, so that the src map can be directly copied for use as the via map (DwC.specimens.csv, etc.). The output mapping column name must be provided by the caller, which input.Makefile maps/src.%.csv provides using the new mappings roots.

Added mappings/roots for use in creating src maps

input.Makefile: Maps building: maps/src.%.csv: Clean up by passing through `$(bin)/cols '*'` whenever it's changed. This ensures that the CSV dialect is always consistently Python's Excel dialect. (Note that this dialect actually uses \r\n as the line ending. The \n line endings were from src maps generated by a previous version of bin/src_map.)

input.Makefile: Maps building: maps/$(via).%.full.csv: Removed alternate rule when $(srcMap) doesn't exist, because this effect is actually achieved by the no-prereqs rule for maps/src.%.csv, which causes make to think it exists when matching pattern rules even if its recipe doesn't actually create it

input.Makefile: Maps building: maps/$(via).%.full.csv: Added alternate rule when $(srcMap) doesn't exist

inputs/CTFS/maps/: Removed unneeded src.organisms.csv since there is an way to deal with it not existing in input.Makefile