lib/PostgreSQL-MySQL.csv: Remove indexes with WHERE clauses

schemas/vegbien.sql: analytical_aggregate: Added primary key on institutionCode, plotName, scientificNameWithMorphospecies, recordNumber. Note that this makes these fields NOT NULL, which should not be a problem because there are inner joins instead of LEFT JOINs on most of the tables which provide them, and LEFT JOINed tables have their identifying fields combined to create a NOT NULL value.

schemas/vegbien.sql: analytical_stem_view: recordNumber: Combine identifying fields in taxonoccurrence, plantobservation, and stemobservation to ensure that this field is unique within the plot and not NULL

lib/PostgreSQL-MySQL.csv: Only match a statement-terminating ; when it's at the end of a line

schemas/vegbien.sql: analytical_aggregate: Added primary key on institutionCode, plotName, scientificNameWithMorphospecies. Note that this makes these fields NOT NULL, which should not be a problem because there are inner joins instead of LEFT JOINs on the tables which provide them.

db_xml.py: put(): _setDefault(): Delay the evaluation of each col_default's value until the col_default is actually retrieved. This fixes a bug in the source table mappings where the explicit source entry was being created after the col_default source entry, causing the initial entry, which did not have the additional fields populated, to be used instead.

dicts.py: Added WrapDict, a dict that runs a function on each value retrieved

db_xml.py: put(): _setDefault(): Fixed bug where need to copy col_defaults before calling update() on it, to avoid modifying the input value (which may be reused by the caller, expecting it to be unmodified)

db_xml.py: put(): col_defaults param: Fixed bug where need to use None as default value, because col_defaults will be modified by put() and the {} default value is a global instance

mappings/VegCore-VegBIEN.csv: source table mappings: Set shortname to env var $source when it's not explicitly specified, because shortname is a required field of source