sql.py: parse_exception(): types cannot be matched MissingCastException: Use the first type as the type to cast to instead of text

sql.py: parse_exception(): InvalidValueException: Fixed bug in regexp where can't use .*? before (?:...)? surrounding matched value, because it prevents the value from being matched now that it is optional

inputs/.NCBI/nodes/header.csv: Updated for new staging table format, which includes a row_num column in each joined table

inputs/.NCBI/nodes/create.sql: Updated for new src table names

xml_func.py: process(): Pass on_error through to sql_io.put(). This fixes a bug in row-based import where DB errors in the xml_func.process() phase would abort the entire import instead of being tracked and having the return value set to None.

sql_io.py: put(): Pass on_error through to put_table()

sql_io.py: put_table(): log_exc(): Return False if removing all rows and have callers break the main loop so that no further exception-handling code is processed before the main loop is exited

sql.py: parse_exception(): InvalidValueException: Also match exceptions which don't provide a specific value but just indicate that a value was invalid, such as PL/Python's "day is out of range for month"

db_xml.py: put(): Inserting children with fkeys to parent: Don't do this if this node had an error and sql_io.put_table() returned None as the generated pkey. This fixes a bug where a node with an error will still try to create children with fkeys to parent, but pass None as the fkey to parent, which the recursive put() call will then incorrectly treat as there being no field with an fkey to parent at all rather than a field whose value is NULL. This causes function overload resolution to be unable to find the intended function, because it is missing a parameter.

sql.py: parse_exception(): function MissingCastException: Return the actual type of the function's 1st param, using new function_param0_type(), rather than just text