InfluxDB 0.9 is approaching release.

Since its API is almost completly changed it will require big updates to both the query editor and the InfluxDB data source.

In order not to force Grafana users to upgrade I think the best approach is to split the InfluxDB support into two different data source implementations (one called influxdb_08, and the one just called influxdb will be 0.9.x).

Of course the influxdb_08 implementation will be removed after a while.