cleaned up env variable thing, wrote some nice scripts

the env variable thing ... turns out env variables can be passed via hadoop.
there's a hadoop setting for the environment of the child nodes. removed all
that dobject join stuff that was uneccesary because of it. much cleaner.

(also, hadoop settings can be set in scoobi apps via configuration.set(name, arg))

also fixed up the scripts to start the c&c instances. much easier to set up a cluster now.