clean: The style.

* src/dctc/java/com/dataiku/dctc/HadoopDistributionClassLoader.java:
  Here.
Set default encoding for stdout and stderr.

* src/core/java/com/dataiku/dip/utils/StdOut.java,
  src/dctc/java/com/dataiku/dctc/Main.java: By default use utf-8.
Use static class if needed.

* src/core/java/com/dataiku/dip/utils/StreamReplacement.java: Don't
  share attributes between the inner class and the mother class.
fixup! clean: The style.
fixup! clean: The style.