add automated backup functionality for PostgreSQL

Issue Summary

Hi !

I use Drupal 4.6.5 with PostgreSQL and I have installed this DBA module.

When an automatical backup is created, it's kinda weird because it misses fields and types of fields in all table structures.

I have for instance :

DROP TABLE IF EXISTS blocks;
CREATE TABLE blocks (
NOT NULL,
NOT NULL,
NOT NULL,
NOT NULL,
NOT NULL,
NOT NULL,
NOT NULL,
NOT NULL,
NOT NULL,
NOT NULL
) TYPE=MyISAM;

Any idea how it could generate a backup compatible with PostgreSQL ?

Thanks in advance.