Add possibility for alert & recover in syslog alerting

Can we separate syslog alert in such a way that when you add it, you can have the possibilty to select:

• simple notification for syslog
• alerter for syslog

where as the first one is just how it works now, and the alerter possibilty would have the possibilty for a regex that sends a "RECOVER message.

You would have to have a table that keeps state for that. This is interesting for say, OSPF alerting.