per-client connection policy

[flihp]

Currently we have the --max-connections command line option that limits the number of connections to the tabrmd at any given time. It may also be desirable to limit the number of connections any given client can make at a time. This is a bit complicated since we need a mechanism to differentiate clients. The dbus IPC frontend has this but doesn't expose it in any meaningful way. This would need to be integrated into the connection manager object as well.