Ship all the scripts in driver.jar and select which one to run at runtime (preparation for a standard library of pydoop python scripts).
When you create the job, it forks the configuration, so we can't use getConf().set after that point, we have to set it directly on the job configuration.
Merge pull request #8 from bsmedberg/scriptdir

Package all the scripts in driver.jar and select which one to run at runtime