We now resolve a hostname to IP before we try to compare it to the existing peer pool

Removed the unneeded address watch mechanism. State manager's transient
state should now take care of this.

The transient state can be used to test out changes before committing
them to the proc state. The transient state is currently being used by
the gui to support proper nonce updating without having to wait for a
block. This used to be done by a cached state mechanism which can now
safely by removed.