guys, please ...

Fixes $_setupedBackends[] into self::$_setupedBackends[] so that setuped backends are REALLY remembered and not instanciated many times.

use USERS tablespace whn none is given, only needed when we need to create a user, does not need to be stored in config

oracle does not need sequence suffix, manually set database name to allow fetching db schema, don't shutdown db - we are using utf8 to connect

Conflicts:

	lib/setup.php