sql.py: DbConn: Added autoanalyze mode. Added autoanalyze() which runs analyze() only if in autoanalyze mode. Use new autoanalyze() in functions that change a table's contents.

sql.py: run_query_into(): analyze() the created table to ensure the query planner's initial stats are accurate

inputs/SpeciesLink/src: Added custom header that overwrites existing header so that column names will not be too long for the staging table

cat_csv: Support overwriting the existing header using a separate header file

schemas/vegbien.sql: Added location.location_coords index to speed up large imports by providing an index for merge joins

csv2db: Reanalyze table, so that query planner stats are up to date even though the table doesn't need to be vacuumed anymore

sql.py: Added analyze()

csv2db: Removed no longer needed table vacuum (cleanup_table() now avoids creating dead rows)

sql.py: cleanup_table(): Use update()'s new in_place mode to avoid needing to vacuum the table

sql.py: mk_update(): in_place: Support updating multiple columns at once