Add alerting and getinfo_MP

Please see notes here guys http://pastie.org/pastes/9733526/text?key=luz9fdv1whtvfhn1sjvckg

Before merging can we grab an hour to build this and run over how it works/test it out.

Thanks
Z
This is the right place for it mate I feel mate.  setLastAlert by it's function runs through CMPTxList looking for the most recent alert - it's run on startup to look through levelDB for alerts and reparses/replays the most recent valid alert.  Perhaps poorly named, maybe getLastAlert / loadLastAlert / setLastAlertFromHistory or something.