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 for testing, this PR is not fully tested yet, and testnet *always* returns true for isTransactionTypeAllowed.  These are overrides solely for testing.