new utility: dump_oracle_table_for_pg

new utility: dump_oracle_table_for_pg

This utility dumps the contents of an Oracle table
to file for loading into PostgreSQL.

Usage: dump_oracle_table_for_pg \
    [--sid oracle_sid] [--host oracle_host] --user oracle_user --pw oracle_password \
    --table oracle_table_name \
    --pg-table destination_pg_table_name \
    --out output_tsv_file --sql output_table_create_sql_file \
    [--column-prefix column_prefix] [--inherits-from base_pg_table] [--help]

Signed-off-by: Galen Charlton <gmc@esilibrary.com>