changed return type and values of dbi_driver_quote_string_copy(), dbi_driver_quote_string(), dbi_conn_quote_string_copy(), dbi_conn_quote_string(); added dbi_conn_quote_binary_copy
changed return type and values of dbi_driver_quote_string_copy(), dbi_driver_quote_string(), dbi_conn_quote_string_copy(), dbi_conn_quote_string(); added dbi_conn_quote_binary_copy

bazsi/libdbi,bazsi/libdbi,bazsi/libdbi