Make materialize's Iterable lazy.

Update the underlying implementation of materialize such that it returns
an Iterable that is lazy. That is, if it is simply being iterated over,
only one element is brought into memory (off HDFS) at a time.
Merge remote-tracking branch 'origin/master' into cdh3
fixed #153: copied the _SUCCESS file to output dirs
Merge remote-tracking branch 'origin/master' into cdh3
Use System.identityHashCode to lower amount of collisions

..and avoid having to catch buggy implementations of hashCode()
Merge remote-tracking branch 'origin/master' into cdh3
removed the test options in the build.sbt file which were running tests locally all the time
improved the message for showing if a run has not been done locally or on the cluster
by default execute the tests only locally
Add DObject convenience API for converting to DList
upgraded scalaz to 7.0.0-M3
Make a nice error when can't create something of Writable
Update repo/docs for scalaz 7.0.0-M3
Implement a Vector-backed execution mode.

Implement a new mode of execution that uses Scala collections rather
than Hadoop. In this mode, execution of Scoobi jobs on smaller data sets
should be significantly faster than running Hadoop, even in local mode,
by avoiding MR start/stop latencies. The implementation should not
require user code to be altered.

The selection of which mode to execute in will be controlled via the
ScoobiConfiguration object passed to persist. This makes it simple to
retarget jobs from one execution mode to another via command line
options, etc.
Add an 'inmemory' argument for the Vector mode.

Control the ability to execute jobs using the Scala collections backed
mode. Allowed switching between in memory/local/cluster for the
ScoobiApp trait.
Update to CDH4.0.1.
Merge commit '037e6bd763bd6bd25f483df65db8e407f8cd6b82' into cdh3

Conflicts:
	pom.xml
fixed #163 added the possibility to set the ScoobiDirectory on the ScoobiConfiguration
merged with master
fixed the compilation error after merge
fixed the argument names list and removed the warnings in Hadoop configuration logs