exc.py: reraise(): Take optional exception argument so it can be invoked in the same way as raise_(). Interestingly, this missing parameter does not produce the usual "...() takes no arguments (1 given)" error when the function is called inside an except block.

exc.py: Added reraise()

db_xml.py: put(): Inserting node: Wrap sql_io.put_table() call in catch-all exception handler that calls on_error_() (wrapper for error handler provided by caller) and returns None. This both adds additional debugging info to the exception (in on_error_()) and allows recovery from arbitrary exceptions that happen in sql_io.put_table(), so that an exception does not abort the import.

exc.py: get_e_tracebacks_str(): Use the current system traceback if the exception doesn't contain its own traceback(s)

schemas/vegbien.sql: specimenreplicate: Added locationevent fkey, since fkeys are not inherited from parent tables

schemas/vegbien.sql: Added datasource_id fkey constraints to all tables that needed it

bin/map: out_is_db: Use col_defaults in row-based mode as well

db_xml.py: Renamed put_table_special_funcs to put_special_funcs because it is now used by put() as well

db_xml.py: Moved put() before the functions that use it

db_xml.py: Renamed _put_table_part() to put(), replacing the existing put() whose functionality it now performs