Adding the capability to retrieve a list of tables, list of rows,
and the table schema information from a given database backup
archive file, for the purpose of manual database table/row
restoration and also for just viewing.
This is added to the HTK _restore_main.sh.tpl and is integrated
into the Postgresql restore script (Mariadb will be done later).
Change-Id: I729ecf7a720f1847a431de7e149cec6841ec67b8
a9ddbd9e46