Metacat

Don't remove postgresql 8.4 and 9.1
Don't remove data directory of postgresql 8.4

Keep /var/lib/postgresql/8.4/main directory.

Add the code to stop tomcat and apache.

Add the "-y" option to force removing the old postgresql without prompting a y/n question.

Restore the database for a gzipped sql file.

Added the code to change the permission of the backup file so the postgres user can read it.

Added the code to check if the metacat backup file exists.
Added the code "exist 0" at the end of the scripts.

Add the code to vacuum the db.

Fixed some bugs to restore postgresql data.

Add a script to move the db from 8.3 to 9.1 base on a dumped file.