input.Makefile: Generate VegBIEN maps from full via maps in order to include all input columns if a src map was provided. This causes the VegBIEN join process to produce all the "No join mapping" errors for that datasource, not just those for fields in the (non-full) via map. maps/src.join.*.csv should no longer be needed for producing "No join mapping" errors.
input.Makefile: Generate VegBIEN maps from full via maps in order to include all input columns if a src map was provided. This causes the VegBIEN join process to produce all the "No join mapping" errors for that datasource, not just those for fields in the (non-full) via map. maps/src.join.*.csv should no longer be needed for producing "No join mapping" errors.