This continues the work of adding database support (and ancilliary functions) to m3.
* Adds Alert->check_alert_sent() and Alert->register_alert(), providing similar functions as in m2.
* Adds Database->disconnect(), Database->insert_or_update_states(), Database->locking() (still in progress), Database->mark_active(), Database->_find_behind_database(), Database->_mark_database_as_behind() and Database->_test_access().
Signed-off-by: Digimer <digimer@alteeve.ca>
* This is an in-progress commit working on adding the Database methods. Much of it is copy/pasted from v2 and none of the new code is tested yet. It will certainly fail to compile.
Signed-off-by: Digimer <digimer@alteeve.ca>
