* Fixed a bug if Get->free_memory() where host_type was still being called from the old System->host_type method.
* Added global support for '--log-secure' and '--log-db' switches to enable logging of secure data and DB transactions, respectively.
* Created Database->get_tables_from_schema() that parses a SQL schema file and returns an array reference of tables found, in the order they were found.
* Updated ScanCore->agent_startup() to no longer require manually defining database tables, using Database->get_tables_from_schema() when not manually set.. Updated all existing agents to use this.
Signed-off-by: Digimer <digimer@alteeve.ca>