add s3 scheme as input stream
Rename a variable in save_locals_to_ddfs.

There was a name clash between this K and the K in K:V.
Introduce the hdfs_scheme
PyCurl: Handle temporary redirect when uploading a file.

It is convenient to issue a single upload and have the files uploaded even if
the server responds with e temporary redirect.  However, we should note that
this is very easy to misuse.  The main sender might not want to receive the
actual payload.  If that is the case, we should not send the payload in the
first request.
JobPack: Introduce the save_info field.

This field will be used for transferring the meta-data needed for saving the
results of a job into hdfs.
JobCoordinator: Factor out save_ddfs from finish_pipeline.

This is a non-functional change.
DdfsHttp: Make the http request standard.

The HTTP RFC dictates that PUT should contain the Path and The Query.  It was
not important for the internal ddfs usage but if we'd like to use this http
client for other purposes, in this case hdfs.
Hdfs: Add support for saving the results of the jobs to HDFS.

This support is not complete yet and should not be used in production.  An
example has been added for a job that reads the input from hdfs and writes the
data in hdfs.
HttpClient: Extract http_client module out of ddfs_http.

The operations in this module are general and can be used for filesystem
operations other than ddfs.
Merge pull request #454 from pooya/shayan/hdfs

Shayan/hdfs
Examples: Change the format of kclustering example.
Examples: Add a comment about the kclustering example.
Merge pull request #456 from pooya/kcluster

Kcluster
Examples: Re-implement the kclustering example with the pipelines.

In this implementation, we tried to stick to the original model and did not
use any of the capabilities of the pipelining.
Merge pull request #457 from pooya/shayan/kcluster_pipeline

Examples: Re-implement the kclustering example with the pipelines.
Examples: Add a naive-bayes implementation with map-reduce.

This example has been resurrected based on an old example by Ville.
Merge pull request #458 from pooya/naive_bayes

Examples: Add a naive-bayes implementation with map-reduce.
fixed output style of results and mapresults
Merge pull request #459 from paulgb/develop

Fixed output formatting of results and mapresults
Update AUTHORS