HBaseVertex i/o formats are not being injected with Configuration via Configurable interface

I reinstalled the latest giraph version from trunk.

When running the unit tests, I noticed the setConf(Configuration conf) is not being called, and therefore the delegate 'tableInputFormat' is never being configured properly. The Accumulo i/o formats use static setters to avoid this requirement. That has the unfortunate side effect of having to remember to call those before setting up GiraphJob.

I can add this same static-method solution to HBaseVertex i/o, depending on whether Configurable is an easy fix. I would imagine other input/output formats would have this same issue.

If static setters are acceptable (same as Accumulo) I can add that to the Giraph-336 patch.