sql.py: put_table(): Assert that insert_out_pkeys and insert_in_pkeys have same row count. Assert that pkeys and in_table have same row count.

db_xml.py: put_table(): Use new sql.table_row_count()

sql.py: Added table_row_count()

db_xml.py: put_table(): Use new sql_gen.row_count

sql_gen.py: Added row_count

db_xml.py: put_table(): Count # rows and update in_row_ct_ref once all columns have been processed. Don't pass in_row_ct_ref to recursive calls because it should only be increased once.

db_xml.py: put_table(): Added in_row_ct_ref param to store the # of input rows processed. Renamed row_ct_ref param to row_ins_ct_ref to distinguish it from new in_row_ct_ref param.

sql_gen.py: MockDb.esc_name(): Don't use sql.esc_name_by_module() to avoid circular dependency on sql module

sql.py: put_table(): Factored out mk_select() calls in calls to run_query_into_pkeys() into new helper function insert_into_pkeys()

sql.py: put_table(): run_query_into_pkeys() calls use order_by=None in their select statements because there is a pkey, so order (row #) does not matter