Deprecate BasicDoFn
#199: FileUtil.copy in mixed S3/HDFS.
fixed a bug in the propagation of context results when the first context is Skipped
removed the verbose logging for Travis
updated the ascii-graph jar
merging pull request 199 to try it out on our cluster. Merge commit 'f5e8146a9697'
fixed the failing unit test for Hadoop examples execution
upgraded the specs2 library
added the possibility to specify the TextInputFormat and refactored a bit the input output format api
added the first support for counters
separated the Counters trait from the Heartbeat trait
fixed the failing unit test
added the necessary changes to compile with CDH3
Revert "added the necessary changes to compile with CDH3"

This reverts commit c3725aa25de89ed4e223a8ba98d5a52449b8bd3a.
build for CDH3
fixed the failing CountersSpec example on the cluster
generalised the context for the hadoop examples
upgraded to the official kiama 1.5.0 version
Tidy up method comments.
Add DList#shuffle.

Use the somewhat random nature of Hadoop's sort-and-shuffle to implement
a DList#shuffle method.